1212210221120 has 56 divisors (see below), whose sum is σ = 2979690955008. Its totient is φ = 469242662400.

The previous prime is 1212210221111. The next prime is 1212210221147. The reversal of 1212210221120 is 211220122121.

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, 61089386 + ... + 61109225.

Almost surely, 2^{1212210221120} is an apocalyptic number.

1212210221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212210221120 is an abundant number, since it is smaller than the sum of its proper divisors (1767480733888).

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

1212210221120 is a wasteful number, since it uses less digits than its factorization.

1212210221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122198659 (or 122198649 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212210221120 its reverse (211220122121), we get a palindrome (1423430343241).

The spelling of 1212210221120 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty".