121002220212 has 48 divisors (see below), whose sum is σ = 293227462080. Its totient is φ = 38803007232.

The previous prime is 121002220189. The next prime is 121002220217. The reversal of 121002220212 is 212022200121.

It is a junction number, because it is equal to n+sod(n) for n = 121002220191 and 121002220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002220217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491538 + ... + 1570569.

It is an arithmetic number, because the mean of its divisors is an integer number (6108905460).

Almost surely, 2^121002220212 is an apocalyptic number.

121002220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121002220212 is an abundant number, since it is smaller than the sum of its proper divisors (172225241868).

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

121002220212 is a wasteful number, since it uses less digits than its factorization.

121002220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062240 (or 3062238 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121002220212 its reverse (212022200121), we get a palindrome (333024420333).

The spelling of 121002220212 in words is "one hundred twenty-one billion, two million, two hundred twenty thousand, two hundred twelve".