121012221220212 has 96 divisors (see below), whose sum is σ = 339690661811200. Its totient is φ = 32754490152192.

The previous prime is 121012221220151. The next prime is 121012221220279. The reversal of 121012221220212 is 212022122210121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76477623 + ... + 78043905.

Almost surely, 2^{121012221220212} is an apocalyptic number.

121012221220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121012221220212 is an abundant number, since it is smaller than the sum of its proper divisors (218678440590988).

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

121012221220212 is a wasteful number, since it uses less digits than its factorization.

121012221220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614725 (or 1614723 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121012221220212 its reverse (212022122210121), we get a palindrome (333034343430333).

The spelling of 121012221220212 in words is "one hundred twenty-one trillion, twelve billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twelve".