121332220212 has 24 divisors (see below), whose sum is σ = 323552587456. Its totient is φ = 34666348608.

The previous prime is 121332220201. The next prime is 121332220223. The reversal of 121332220212 is 212022233121.

It is an interprime number because it is at equal distance from previous prime (121332220201) and next prime (121332220223).

It is a super-2 number, since 2×121332220212² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 722215513 + ... + 722215680.

Almost surely, 2^121332220212 is an apocalyptic number.

121332220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121332220212 is an abundant number, since it is smaller than the sum of its proper divisors (202220367244).

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

121332220212 is a wasteful number, since it uses less digits than its factorization.

121332220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444431207 (or 1444431205 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 121332220212 its reverse (212022233121), we get a palindrome (333354453333).

The spelling of 121332220212 in words is "one hundred twenty-one billion, three hundred thirty-two million, two hundred twenty thousand, two hundred twelve".