1021011212122 has 64 divisors (see below), whose sum is σ = 1781867662848. Its totient is φ = 433632640000.

The previous prime is 1021011212069. The next prime is 1021011212147. The reversal of 1021011212122 is 2212121101201.

It is a junction number, because it is equal to n+sod(n) for n = 1021011212096 and 1021011212105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45344847 + ... + 45367357.

It is an arithmetic number, because the mean of its divisors is an integer number (27841682232).

Almost surely, 2^{1021011212122} is an apocalyptic number.

1021011212122 is a deficient number, since it is larger than the sum of its proper divisors (760856450726).

1021011212122 is a wasteful number, since it uses less digits than its factorization.

1021011212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23415.

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

Adding to 1021011212122 its reverse (2212121101201), we get a palindrome (3233132313323).

The spelling of 1021011212122 in words is "one trillion, twenty-one billion, eleven million, two hundred twelve thousand, one hundred twenty-two".