202121551116620 has 48 divisors (see below), whose sum is σ = 463920736704768. Its totient is φ = 73638212167680.

The previous prime is 202121551116613. The next prime is 202121551116629. The reversal of 202121551116620 is 26611155121202.

202121551116620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (202121551116629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9588298337 + ... + 9588319416.

It is an arithmetic number, because the mean of its divisors is an integer number (9665015348016).

Almost surely, 2^{202121551116620} is an apocalyptic number.

202121551116620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202121551116620 is an abundant number, since it is smaller than the sum of its proper divisors (261799185588148).

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

202121551116620 is a wasteful number, since it uses less digits than its factorization.

202121551116620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19176617810 (or 19176617808 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 202121551116620 in words is "two hundred two trillion, one hundred twenty-one billion, five hundred fifty-one million, one hundred sixteen thousand, six hundred twenty".