1222356532221 has 144 divisors (see below), whose sum is σ = 2071599828480. Its totient is φ = 692676230400.

The previous prime is 1222356532217. The next prime is 1222356532273.

It is a happy number.

1222356532221 is a `hidden beast` number, since 1 + 22 + 23 + 565 + 32 + 2 + 21 = 666.

1222356532221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1222356532221 - 2² = 1222356532217 is a prime.

It is a super-2 number, since 2×1222356532221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222356532291) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 260572486 + ... + 260577176.

It is an arithmetic number, because the mean of its divisors is an integer number (14386109920).

Almost surely, 2^{1222356532221} is an apocalyptic number.

1222356532221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222356532221 is a deficient number, since it is larger than the sum of its proper divisors (849243296259).

1222356532221 is a wasteful number, since it uses less digits than its factorization.

1222356532221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008 (or 4994 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The spelling of 1222356532221 in words is "one trillion, two hundred twenty-two billion, three hundred fifty-six million, five hundred thirty-two thousand, two hundred twenty-one".