1021000222122 has 16 divisors (see below), whose sum is σ = 2091805333632. Its totient is φ = 332032592480.

The previous prime is 1021000222093. The next prime is 1021000222127. The reversal of 1021000222122 is 2212220001201.

It is not an unprimeable number, because it can be changed into a prime (1021000222127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2075203458 + ... + 2075203949.

It is an arithmetic number, because the mean of its divisors is an integer number (130737833352).

Almost surely, 2^{1021000222122} is an apocalyptic number.

1021000222122 is an abundant number, since it is smaller than the sum of its proper divisors (1070805111510).

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

1021000222122 is a wasteful number, since it uses less digits than its factorization.

1021000222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150407453.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1021000222122 its reverse (2212220001201), we get a palindrome (3233220223323).

The spelling of 1021000222122 in words is "one trillion, twenty-one billion, two hundred twenty-two thousand, one hundred twenty-two".