1020122221012 has 48 divisors (see below), whose sum is σ = 1867444346880. Its totient is φ = 486677847392.

The previous prime is 1020122220967. The next prime is 1020122221087. The reversal of 1020122221012 is 2101222210201.

It is a happy number.

It is a congruent 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, 77705193 + ... + 77718319.

It is an arithmetic number, because the mean of its divisors is an integer number (38905090560).

Almost surely, 2^{1020122221012} is an apocalyptic number.

It is an amenable number.

1020122221012 is a deficient number, since it is larger than the sum of its proper divisors (847322125868).

1020122221012 is a wasteful number, since it uses less digits than its factorization.

1020122221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15180 (or 15178 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1020122221012 its reverse (2101222210201), we get a palindrome (3121344431213).

The spelling of 1020122221012 in words is "one trillion, twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, twelve".