121104220212 has 36 divisors (see below), whose sum is σ = 306415922176. Its totient is φ = 40329651600.

The previous prime is 121104220189. The next prime is 121104220231. The reversal of 121104220212 is 212022401121.

121104220212 is a `hidden beast` number, since 1 + 21 + 10 + 422 + 0 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1562548 + ... + 1638219.

Almost surely, 2^121104220212 is an apocalyptic number.

121104220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121104220212 is an abundant number, since it is smaller than the sum of its proper divisors (185311701964).

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

121104220212 is a wasteful number, since it uses less digits than its factorization.

121104220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201828 (or 3201823 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121104220212 its reverse (212022401121), we get a palindrome (333126621333).

The spelling of 121104220212 in words is "one hundred twenty-one billion, one hundred four million, two hundred twenty thousand, two hundred twelve".