1021022212211 has 4 divisors (see below), whose sum is σ = 1074760223400. Its totient is φ = 967284201024.

The previous prime is 1021022212163. The next prime is 1021022212213. The reversal of 1021022212211 is 1122122201201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021022212211 - 2²⁶ = 1020955103347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021022212211.

It is not an unprimeable number, because it can be changed into a prime (1021022212213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26869005566 + ... + 26869005603.

It is an arithmetic number, because the mean of its divisors is an integer number (268690055850).

Almost surely, 2^{1021022212211} is an apocalyptic number.

1021022212211 is a deficient number, since it is larger than the sum of its proper divisors (53738011189).

1021022212211 is an equidigital number, since it uses as much as digits as its factorization.

1021022212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53738011188.

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

Adding to 1021022212211 its reverse (1122122201201), we get a palindrome (2143144413412).

The spelling of 1021022212211 in words is "one trillion, twenty-one billion, twenty-two million, two hundred twelve thousand, two hundred eleven".