1221202001112 has 16 divisors (see below), whose sum is σ = 3053005002840. Its totient is φ = 407067333696.

The previous prime is 1221202001087. The next prime is 1221202001153. The reversal of 1221202001112 is 2111002021221.

It is a junction number, because it is equal to n+sod(n) for n = 1221202001091 and 1221202001100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25441708333 + ... + 25441708380.

Almost surely, 2^{1221202001112} is an apocalyptic number.

1221202001112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221202001112 is an abundant number, since it is smaller than the sum of its proper divisors (1831803001728).

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

1221202001112 is a wasteful number, since it uses less digits than its factorization.

1221202001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50883416722 (or 50883416718 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1221202001112 its reverse (2111002021221), we get a palindrome (3332204022333).

The spelling of 1221202001112 in words is "one trillion, two hundred twenty-one billion, two hundred two million, one thousand, one hundred twelve".