1020121220202 has 32 divisors (see below), whose sum is σ = 2361220915200. Its totient is φ = 287773797168.

The previous prime is 1020121220179. The next prime is 1020121220303. The reversal of 1020121220202 is 2020221210201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153722002 + ... + 153728637.

It is an arithmetic number, because the mean of its divisors is an integer number (73788153600).

Almost surely, 2^{1020121220202} is an apocalyptic number.

1020121220202 is an abundant number, since it is smaller than the sum of its proper divisors (1341099694998).

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

1020121220202 is a wasteful number, since it uses less digits than its factorization.

1020121220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307450730.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1020121220202 its reverse (2020221210201), we get a palindrome (3040342430403).

The spelling of 1020121220202 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred twenty thousand, two hundred two".