1222289561788 has 12 divisors (see below), whose sum is σ = 2139444281520. Its totient is φ = 611019767072.

The previous prime is 1222289561737. The next prime is 1222289561827. The reversal of 1222289561788 is 8871659822221.

It is a super-4 number, since 4×1222289561788⁴ (a number of 49 digits) contains 4444 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, 31231456 + ... + 31270567.

It is an arithmetic number, because the mean of its divisors is an integer number (178287023460).

Almost surely, 2^{1222289561788} is an apocalyptic number.

It is an amenable number.

1222289561788 is a deficient number, since it is larger than the sum of its proper divisors (917154719732).

1222289561788 is a wasteful number, since it uses less digits than its factorization.

1222289561788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62506916 (or 62506914 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 61.

The spelling of 1222289561788 in words is "one trillion, two hundred twenty-two billion, two hundred eighty-nine million, five hundred sixty-one thousand, seven hundred eighty-eight".