100420121212 has 12 divisors (see below), whose sum is σ = 176266136536. Its totient is φ = 50058367920.

The previous prime is 100420121189. The next prime is 100420121231. The reversal of 100420121212 is 212121024001.

100420121212 is a modest number, since divided by 121212 gives 100420 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37921683 + ... + 37924330.

Almost surely, 2^100420121212 is an apocalyptic number.

It is an amenable number.

100420121212 is a deficient number, since it is larger than the sum of its proper divisors (75846015324).

100420121212 is a wasteful number, since it uses less digits than its factorization.

100420121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75846348 (or 75846346 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100420121212 its reverse (212121024001), we get a palindrome (312541145213).

The spelling of 100420121212 in words is "one hundred billion, four hundred twenty million, one hundred twenty-one thousand, two hundred twelve".