100220212112121 has 12 divisors (see below), whose sum is σ = 144763389621760. Its totient is φ = 66813077349720.

The previous prime is 100220212112113. The next prime is 100220212112149. The reversal of 100220212112121 is 121211212022001.

100220212112121 is a `hidden beast` number, since 1 + 0 + 0 + 220 + 21 + 211 + 212 + 1 = 666.

It is not a de Polignac number, because 100220212112121 - 2³ = 100220212112113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220212112094 and 100220212112103.

It is not an unprimeable number, because it can be changed into a prime (100220212112171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31514665 + ... + 34548726.

Almost surely, 2^{100220212112121} is an apocalyptic number.

It is an amenable number.

100220212112121 is a deficient number, since it is larger than the sum of its proper divisors (44543177509639).

100220212112121 is a wasteful number, since it uses less digits than its factorization.

100220212112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66231956 (or 66231953 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 100220212112121 its reverse (121211212022001), we get a palindrome (221431424134122).

The spelling of 100220212112121 in words is "one hundred trillion, two hundred twenty billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".