100221020210121 has 8 divisors (see below), whose sum is σ = 133637898318624. Its totient is φ = 66809077787520.

The previous prime is 100221020210111. The next prime is 100221020210123. The reversal of 100221020210121 is 121012020122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100221020210121 - 2⁵ = 100221020210089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100221020210121.

It is not an unprimeable number, because it can be changed into a prime (100221020210123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233874095 + ... + 1233955316.

It is an arithmetic number, because the mean of its divisors is an integer number (16704737289828).

Almost surely, 2^{100221020210121} is an apocalyptic number.

It is an amenable number.

100221020210121 is a deficient number, since it is larger than the sum of its proper divisors (33416878108503).

100221020210121 is a wasteful number, since it uses less digits than its factorization.

100221020210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467842951.

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

Adding to 100221020210121 its reverse (121012020122001), we get a palindrome (221233040332122).

The spelling of 100221020210121 in words is "one hundred trillion, two hundred twenty-one billion, twenty million, two hundred ten thousand, one hundred twenty-one".