202121111100201 has 16 divisors (see below), whose sum is σ = 271069939620480. Its totient is φ = 133962029631360.

The previous prime is 202121111099903. The next prime is 202121111100241. The reversal of 202121111100201 is 102001111121202.

It is a happy number.

It is not a de Polignac number, because 202121111100201 - 2¹³ = 202121111092009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202121111100241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272709730 + ... + 273449883.

It is an arithmetic number, because the mean of its divisors is an integer number (16941871226280).

Almost surely, 2^{202121111100201} is an apocalyptic number.

It is an amenable number.

202121111100201 is a deficient number, since it is larger than the sum of its proper divisors (68948828520279).

202121111100201 is a wasteful number, since it uses less digits than its factorization.

202121111100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546160336.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 202121111100201 its reverse (102001111121202), we get a palindrome (304122222221403).

The spelling of 202121111100201 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred thousand, two hundred one".