1021022212021 has 16 divisors (see below), whose sum is σ = 1258255877760. Its totient is φ = 808878769920.

The previous prime is 1021022212009. The next prime is 1021022212027. The reversal of 1021022212021 is 1202122201201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1021022212021 - 2⁷ = 1021022211893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021022211986 and 1021022212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021022212027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93614776 + ... + 93625681.

It is an arithmetic number, because the mean of its divisors is an integer number (78640992360).

Almost surely, 2^{1021022212021} is an apocalyptic number.

It is an amenable number.

1021022212021 is a deficient number, since it is larger than the sum of its proper divisors (237233665739).

1021022212021 is a wasteful number, since it uses less digits than its factorization.

1021022212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187240524.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1021022212021 its reverse (1202122201201), we get a palindrome (2223144413222).

The spelling of 1021022212021 in words is "one trillion, twenty-one billion, twenty-two million, two hundred twelve thousand, twenty-one".