102121010221000 has 32 divisors (see below), whose sum is σ = 238963163919480. Its totient is φ = 40848404088000.

The previous prime is 102121010220937. The next prime is 102121010221063. The reversal of 102121010221000 is 122010121201.

It is an interprime number because it is at equal distance from previous prime (102121010220937) and next prime (102121010221063).

It can be written as a sum of positive squares in 4 ways, for example, as 49158916640964 + 52962093580036 = 7011342^2 + 7277506^2 .

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, 51060504111 + ... + 51060506110.

Almost surely, 2^{102121010221000} is an apocalyptic number.

102121010221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121010221000 is an abundant number, since it is smaller than the sum of its proper divisors (136842153698480).

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

102121010221000 is a wasteful number, since it uses less digits than its factorization.

102121010221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102121010242 (or 102121010228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102121010221000 its reverse (122010121201), we get a palindrome (102243020342201).

The spelling of 102121010221000 in words is "one hundred two trillion, one hundred twenty-one billion, ten million, two hundred twenty-one thousand".