122221121356 has 12 divisors (see below), whose sum is σ = 213896157160. Its totient is φ = 61107933600.

The previous prime is 122221121299. The next prime is 122221121357. The reversal of 122221121356 is 653121122221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (122221121357) 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, 550170 + ... + 739681.

Almost surely, 2^122221121356 is an apocalyptic number.

It is an amenable number.

122221121356 is a deficient number, since it is larger than the sum of its proper divisors (91675035804).

122221121356 is a wasteful number, since it uses less digits than its factorization.

122221121356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313544 (or 1313542 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

Adding to 122221121356 its reverse (653121122221), we get a palindrome (775342243577).

The spelling of 122221121356 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred fifty-six".