1021200111122 has 8 divisors (see below), whose sum is σ = 1531831746672. Its totient is φ = 510589528900.

The previous prime is 1021200111091. The next prime is 1021200111143. The reversal of 1021200111122 is 2211110021201.

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 = 1021200111097 and 1021200111106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5141504 + ... + 5336427.

It is an arithmetic number, because the mean of its divisors is an integer number (191478968334).

Almost surely, 2^{1021200111122} is an apocalyptic number.

1021200111122 is a deficient number, since it is larger than the sum of its proper divisors (510631635550).

1021200111122 is a wasteful number, since it uses less digits than its factorization.

1021200111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526664.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021200111122 its reverse (2211110021201), we get a palindrome (3232310132323).

The spelling of 1021200111122 in words is "one trillion, twenty-one billion, two hundred million, one hundred eleven thousand, one hundred twenty-two".