1021122201212 has 96 divisors (see below), whose sum is σ = 2081385331200. Its totient is φ = 434788687872.

The previous prime is 1021122201139. The next prime is 1021122201259. The reversal of 1021122201212 is 2121022211201.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19973339 + ... + 20024397.

It is an arithmetic number, because the mean of its divisors is an integer number (21681097200).

Almost surely, 2^{1021122201212} is an apocalyptic number.

It is an amenable number.

1021122201212 is an abundant number, since it is smaller than the sum of its proper divisors (1060263129988).

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

1021122201212 is a wasteful number, since it uses less digits than its factorization.

1021122201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51795 (or 51793 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021122201212 its reverse (2121022211201), we get a palindrome (3142144412413).

The spelling of 1021122201212 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two hundred one thousand, two hundred twelve".