1022213131 has 4 divisors (see below), whose sum is σ = 1026190872. Its totient is φ = 1018235392.

The previous prime is 1022213119. The next prime is 1022213147. The reversal of 1022213131 is 1313122201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022213131 is a prime.

It is a super-3 number, since 3×1022213131³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022213161) 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, 1988485 + ... + 1988998.

It is an arithmetic number, because the mean of its divisors is an integer number (256547718).

Almost surely, 2^1022213131 is an apocalyptic number.

1022213131 is a deficient number, since it is larger than the sum of its proper divisors (3977741).

1022213131 is an equidigital number, since it uses as much as digits as its factorization.

1022213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977740.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1022213131 is about 31972.0679812864. The cubic root of 1022213131 is about 1007.3502189150.

Adding to 1022213131 its reverse (1313122201), we get a palindrome (2335335332).

The spelling of 1022213131 in words is "one billion, twenty-two million, two hundred thirteen thousand, one hundred thirty-one".