20210312331121 has 32 divisors (see below), whose sum is σ = 23255825407488. Its totient is φ = 17401127178240.

The previous prime is 20210312331113. The next prime is 20210312331169. The reversal of 20210312331121 is 12113321301202.

It is a cyclic number.

It is not a de Polignac number, because 20210312331121 - 2³ = 20210312331113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20210312331092 and 20210312331101.

It is not an unprimeable number, because it can be changed into a prime (20210312337121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3051616 + ... + 7052161.

It is an arithmetic number, because the mean of its divisors is an integer number (726744543984).

Almost surely, 2^{20210312331121} is an apocalyptic number.

It is an amenable number.

20210312331121 is a deficient number, since it is larger than the sum of its proper divisors (3045513076367).

20210312331121 is a wasteful number, since it uses less digits than its factorization.

20210312331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103961.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20210312331121 its reverse (12113321301202), we get a palindrome (32323633632323).

The spelling of 20210312331121 in words is "twenty trillion, two hundred ten billion, three hundred twelve million, three hundred thirty-one thousand, one hundred twenty-one".