202101002121210 has 32 divisors (see below), whose sum is σ = 485115685882560. Its totient is φ = 53885458255488.

The previous prime is 202101002121209. The next prime is 202101002121211. The reversal of 202101002121210 is 12121200101202.

It is an interprime number because it is at equal distance from previous prime (202101002121209) and next prime (202101002121211).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202101002121210.

It is not an unprimeable number, because it can be changed into a prime (202101002121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508692507 + ... + 509089646.

It is an arithmetic number, because the mean of its divisors is an integer number (15159865183830).

Almost surely, 2^{202101002121210} is an apocalyptic number.

202101002121210 is an abundant number, since it is smaller than the sum of its proper divisors (283014683761350).

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

202101002121210 is a wasteful number, since it uses less digits than its factorization.

202101002121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017788782.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202101002121210 its reverse (12121200101202), we get a palindrome (214222202222412).

The spelling of 202101002121210 in words is "two hundred two trillion, one hundred one billion, two million, one hundred twenty-one thousand, two hundred ten".