1022121212021 has 12 divisors (see below), whose sum is σ = 1264907401632. Its totient is φ = 808711287696.

The previous prime is 1022121211961. The next prime is 1022121212033. The reversal of 1022121212021 is 1202121212201.

It is not a de Polignac number, because 1022121212021 - 2¹⁰ = 1022121210997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121212521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432002711 + ... + 432005076.

It is an arithmetic number, because the mean of its divisors is an integer number (105408950136).

Almost surely, 2^{1022121212021} is an apocalyptic number.

It is an amenable number.

1022121212021 is a deficient number, since it is larger than the sum of its proper divisors (242786189611).

1022121212021 is an equidigital number, since it uses as much as digits as its factorization.

1022121212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864007820 (or 864007807 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1022121212021 its reverse (1202121212201), we get a palindrome (2224242424222).

The spelling of 1022121212021 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, twenty-one".