202110220121002 has 24 divisors (see below), whose sum is σ = 323063523202284. Its totient is φ = 94810658007552.

The previous prime is 202110220120993. The next prime is 202110220121101. The reversal of 202110220121002 is 200121022011202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 138229188782281 + 63881031338721 = 11757091^2 + 7992561^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551349363 + ... + 551715814.

Almost surely, 2^{202110220121002} is an apocalyptic number.

202110220121002 is a deficient number, since it is larger than the sum of its proper divisors (120953303081282).

202110220121002 is a wasteful number, since it uses less digits than its factorization.

202110220121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103065530 (or 1103065513 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202110220121002 its reverse (200121022011202), we get a palindrome (402231242132204).

The spelling of 202110220121002 in words is "two hundred two trillion, one hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, two".