1021111112122 has 8 divisors (see below), whose sum is σ = 1531671715872. Its totient is φ = 510553873500.

The previous prime is 1021111112101. The next prime is 1021111112167. The reversal of 1021111112122 is 2212111111201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1021111112096 and 1021111112105.

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, 151747 + ... + 1437097.

It is an arithmetic number, because the mean of its divisors is an integer number (191458964484).

Almost surely, 2^{1021111112122} is an apocalyptic number.

1021111112122 is a deficient number, since it is larger than the sum of its proper divisors (510560603750).

1021111112122 is a wasteful number, since it uses less digits than its factorization.

1021111112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682564.

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

Adding to 1021111112122 its reverse (2212111111201), we get a palindrome (3233222223323).

The spelling of 1021111112122 in words is "one trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty-two".