1221175171622 has 48 divisors (see below), whose sum is σ = 2171763001872. Its totient is φ = 513312770880.

The previous prime is 1221175171613. The next prime is 1221175171639. The reversal of 1221175171622 is 2261715711221.

It is a super-2 number, since 2×1221175171622² (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 23 ways as a sum of consecutive naturals, for example, 15974972 + ... + 16051232.

It is an arithmetic number, because the mean of its divisors is an integer number (45245062539).

Almost surely, 2^{1221175171622} is an apocalyptic number.

1221175171622 is a deficient number, since it is larger than the sum of its proper divisors (950587830250).

1221175171622 is a wasteful number, since it uses less digits than its factorization.

1221175171622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79413 (or 79406 counting only the distinct ones).

The product of its digits is 23520, while the sum is 38.

The spelling of 1221175171622 in words is "one trillion, two hundred twenty-one billion, one hundred seventy-five million, one hundred seventy-one thousand, six hundred twenty-two".