1021120002122 has 24 divisors (see below), whose sum is σ = 1689840929700. Its totient is φ = 462419978240.

The previous prime is 1021120002073. The next prime is 1021120002127. The reversal of 1021120002122 is 2212000211201.

It can be written as a sum of positive squares in 2 ways, for example, as 678648087601 + 342471914521 = 823801^2 + 585211^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021120002097 and 1021120002106.

It is not an unprimeable number, because it can be changed into a prime (1021120002127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7777847 + ... + 7908042.

Almost surely, 2^{1021120002122} is an apocalyptic number.

1021120002122 is a deficient number, since it is larger than the sum of its proper divisors (668720927578).

1021120002122 is a wasteful number, since it uses less digits than its factorization.

1021120002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15686182 (or 15686171 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021120002122 its reverse (2212000211201), we get a palindrome (3233120213323).

The spelling of 1021120002122 in words is "one trillion, twenty-one billion, one hundred twenty million, two thousand, one hundred twenty-two".