1220121112002 has 32 divisors (see below), whose sum is σ = 2661218407680. Its totient is φ = 370669703040.

The previous prime is 1220121111991. The next prime is 1220121112109. The reversal of 1220121112002 is 2002111210221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98997499 + ... + 99009822.

It is an arithmetic number, because the mean of its divisors is an integer number (83163075240).

Almost surely, 2^{1220121112002} is an apocalyptic number.

1220121112002 is an abundant number, since it is smaller than the sum of its proper divisors (1441097295678).

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

1220121112002 is a wasteful number, since it uses less digits than its factorization.

1220121112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198007418.

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

Adding to 1220121112002 its reverse (2002111210221), we get a palindrome (3222232322223).

The spelling of 1220121112002 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twelve thousand, two".