102021200121120 has 384 divisors, whose sum is σ = 399077843189760. Its totient is φ = 21379169341440.

The previous prime is 102021200121107. The next prime is 102021200121121. The reversal of 102021200121120 is 21121002120201.

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 102021200121120.

It is not an unprimeable number, because it can be changed into a prime (102021200121121) 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, 23796387 + ... + 27754466.

It is an arithmetic number, because the mean of its divisors is an integer number (1039265216640).

Almost surely, 2^{102021200121120} is an apocalyptic number.

102021200121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021200121120 is an abundant number, since it is smaller than the sum of its proper divisors (297056643068640).

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

102021200121120 is a wasteful number, since it uses less digits than its factorization.

102021200121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51550928 (or 51550920 counting only the distinct ones).

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

Adding to 102021200121120 its reverse (21121002120201), we get a palindrome (123142202241321).

The spelling of 102021200121120 in words is "one hundred two trillion, twenty-one billion, two hundred million, one hundred twenty-one thousand, one hundred twenty".