202121211112120 has 32 divisors (see below), whose sum is σ = 454773387118320. Its totient is φ = 80848366735360.

The previous prime is 202121211112097. The next prime is 202121211112157. The reversal of 202121211112120 is 21211112121202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27375480 + ... + 33965560.

Almost surely, 2^{202121211112120} is an apocalyptic number.

202121211112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202121211112120 is an abundant number, since it is smaller than the sum of its proper divisors (252652176006200).

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

202121211112120 is a wasteful number, since it uses less digits than its factorization.

202121211112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7356855 (or 7356851 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 202121211112120 its reverse (21211112121202), we get a palindrome (223332323233322).

The spelling of 202121211112120 in words is "two hundred two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty".