1213140240020 has 12 divisors (see below), whose sum is σ = 2547594504084. Its totient is φ = 485256096000.

The previous prime is 1213140239977. The next prime is 1213140240077. The reversal of 1213140240020 is 200420413121.

It can be written as a sum of positive squares in 2 ways, for example, as 415194654736 + 797945585284 = 644356^2 + 893278^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 60657012001 = 1213140240020 / (1 + 2 + 1 + 3 + 1 + 4 + 0 + 2 + 4 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1213140239974 and 1213140240001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30328505981 + ... + 30328506020.

It is an arithmetic number, because the mean of its divisors is an integer number (212299542007).

Almost surely, 2^{1213140240020} is an apocalyptic number.

1213140240020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213140240020 is an abundant number, since it is smaller than the sum of its proper divisors (1334454264064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213140240020 is a wasteful number, since it uses less digits than its factorization.

1213140240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60657012010 (or 60657012008 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1213140240020 its reverse (200420413121), we get a palindrome (1413560653141).

The spelling of 1213140240020 in words is "one trillion, two hundred thirteen billion, one hundred forty million, two hundred forty thousand, twenty".