1021012111102 has 32 divisors (see below), whose sum is σ = 1555130142720. Its totient is φ = 502672491360.

The previous prime is 1021012110893. The next prime is 1021012111117. The reversal of 1021012111102 is 2011112101201.

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, 97914813 + ... + 97925239.

It is an arithmetic number, because the mean of its divisors is an integer number (48597816960).

Almost surely, 2^{1021012111102} is an apocalyptic number.

1021012111102 is a deficient number, since it is larger than the sum of its proper divisors (534118031618).

1021012111102 is a wasteful number, since it uses less digits than its factorization.

1021012111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12136.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1021012111102 its reverse (2011112101201), we get a palindrome (3032124212303).

Subtracting 1021012111102 from its reverse (2011112101201), we obtain a palindrome (990099990099).

The spelling of 1021012111102 in words is "one trillion, twenty-one billion, twelve million, one hundred eleven thousand, one hundred two".