102121000100202 has 128 divisors (see below), whose sum is σ = 223371509760000. Its totient is φ = 31022772498432.

The previous prime is 102121000100137. The next prime is 102121000100209. The reversal of 102121000100202 is 202001000121201.

It is a super-2 number, since 2×102121000100202² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102121000100209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57186199 + ... + 58944917.

It is an arithmetic number, because the mean of its divisors is an integer number (1745089920000).

Almost surely, 2^{102121000100202} is an apocalyptic number.

102121000100202 is an abundant number, since it is smaller than the sum of its proper divisors (121250509659798).

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

102121000100202 is a wasteful number, since it uses less digits than its factorization.

102121000100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758988.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102121000100202 its reverse (202001000121201), we get a palindrome (304122000221403).

The spelling of 102121000100202 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred thousand, two hundred two".