1111221121002 has 32 divisors (see below), whose sum is σ = 2352935545920. Its totient is φ = 348883534080.

The previous prime is 1111221120979. The next prime is 1111221121057. The reversal of 1111221121002 is 2001211221111.

It is a happy number.

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, 28152399 + ... + 28191842.

It is an arithmetic number, because the mean of its divisors is an integer number (73529235810).

Almost surely, 2^{1111221121002} is an apocalyptic number.

1111221121002 is an abundant number, since it is smaller than the sum of its proper divisors (1241714424918).

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

1111221121002 is a wasteful number, since it uses less digits than its factorization.

1111221121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56344438.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111221121002 its reverse (2001211221111), we get a palindrome (3112432342113).

The spelling of 1111221121002 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, two".