102021221021000 has 32 divisors (see below), whose sum is σ = 238729657191480. Its totient is φ = 40808488408000.

The previous prime is 102021221020981. The next prime is 102021221021003. The reversal of 102021221021000 is 120122120201.

It can be written as a sum of positive squares in 4 ways, for example, as 40379848176196 + 61641372844804 = 6354514^2 + 7851202^2 .

It is not an unprimeable number, because it can be changed into a prime (102021221021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51010609511 + ... + 51010611510.

Almost surely, 2^{102021221021000} is an apocalyptic number.

102021221021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021221021000 is an abundant number, since it is smaller than the sum of its proper divisors (136708436170480).

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

102021221021000 is a wasteful number, since it uses less digits than its factorization.

102021221021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102021221042 (or 102021221028 counting only the distinct ones).

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

Adding to 102021221021000 its reverse (120122120201), we get a palindrome (102141343141201).

The spelling of 102021221021000 in words is "one hundred two trillion, twenty-one billion, two hundred twenty-one million, twenty-one thousand".