102120021221000 has 128 divisors (see below), whose sum is σ = 251544609388800. Its totient is φ = 38697055948800.

The previous prime is 102120021220967. The next prime is 102120021221011. The reversal of 102120021221000 is 122120021201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1316908229 + ... + 1316985771.

It is an arithmetic number, because the mean of its divisors is an integer number (1965192260850).

Almost surely, 2^{102120021221000} is an apocalyptic number.

102120021221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120021221000 is an abundant number, since it is smaller than the sum of its proper divisors (149424588167800).

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

102120021221000 is a wasteful number, since it uses less digits than its factorization.

102120021221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146896 (or 146882 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102120021221000 its reverse (122120021201), we get a palindrome (102242141242201).

The spelling of 102120021221000 in words is "one hundred two trillion, one hundred twenty billion, twenty-one million, two hundred twenty-one thousand".