122213521011 has 4 divisors (see below), whose sum is σ = 162951361352. Its totient is φ = 81475680672.

The previous prime is 122213520983. The next prime is 122213521013. The reversal of 122213521011 is 110125312221.

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

It is not a de Polignac number, because 122213521011 - 2⁷ = 122213520883 is a prime.

It is a super-2 number, since 2×122213521011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122213521013) 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, 20368920166 + ... + 20368920171.

It is an arithmetic number, because the mean of its divisors is an integer number (40737840338).

Almost surely, 2^122213521011 is an apocalyptic number.

122213521011 is a deficient number, since it is larger than the sum of its proper divisors (40737840341).

122213521011 is an equidigital number, since it uses as much as digits as its factorization.

122213521011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40737840340.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 122213521011 its reverse (110125312221), we get a palindrome (232338833232).

The spelling of 122213521011 in words is "one hundred twenty-two billion, two hundred thirteen million, five hundred twenty-one thousand, eleven".