1221522051224 has 16 divisors (see below), whose sum is σ = 2307071759400. Its totient is φ = 606302915392.

The previous prime is 1221522051179. The next prime is 1221522051293. The reversal of 1221522051224 is 4221502251221.

It is a super-2 number, since 2×1221522051224² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557262614 + ... + 557264805.

Almost surely, 2^{1221522051224} is an apocalyptic number.

It is an amenable number.

1221522051224 is a deficient number, since it is larger than the sum of its proper divisors (1085549708176).

1221522051224 is a wasteful number, since it uses less digits than its factorization.

1221522051224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114527562 (or 1114527558 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 1221522051224 in words is "one trillion, two hundred twenty-one billion, five hundred twenty-two million, fifty-one thousand, two hundred twenty-four".