1021122120112 has 20 divisors (see below), whose sum is σ = 1979049695560. Its totient is φ = 510399618048.

The previous prime is 1021122120089. The next prime is 1021122120127. The reversal of 1021122120112 is 2110212211201.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10037937 + ... + 10139152.

It is an arithmetic number, because the mean of its divisors is an integer number (98952484778).

Almost surely, 2^{1021122120112} is an apocalyptic number.

It is an amenable number.

1021122120112 is a deficient number, since it is larger than the sum of its proper divisors (957927575448).

1021122120112 is a wasteful number, since it uses less digits than its factorization.

1021122120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20180260 (or 20180254 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1021122120112 its reverse (2110212211201), we get a palindrome (3131334331313).

The spelling of 1021122120112 in words is "one trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twelve".