221213343312122 has 12 divisors (see below), whose sum is σ = 385994711289690. Its totient is φ = 94805718562296.

The previous prime is 221213343312097. The next prime is 221213343312131.

221213343312122 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 219702978509161 + 1510364802961 = 14822381^2 + 1228969^2 .

It is a super-2 number, since 2×221213343312122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128639506597 + ... + 1128639506792.

Almost surely, 2^{221213343312122} is an apocalyptic number.

221213343312122 is a deficient number, since it is larger than the sum of its proper divisors (164781367977568).

221213343312122 is a wasteful number, since it uses less digits than its factorization.

221213343312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257279013405 (or 2257279013398 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The spelling of 221213343312122 in words is "two hundred twenty-one trillion, two hundred thirteen billion, three hundred forty-three million, three hundred twelve thousand, one hundred twenty-two".