22271997474420 has 48 divisors (see below), whose sum is σ = 62688093447168. Its totient is φ = 5908104039040.

The previous prime is 22271997474329. The next prime is 22271997474421. The reversal of 22271997474420 is 2447479917222.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22271997474421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971716179 + ... + 971739098.

It is an arithmetic number, because the mean of its divisors is an integer number (1306001946816).

Almost surely, 2^{22271997474420} is an apocalyptic number.

22271997474420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22271997474420 is an abundant number, since it is smaller than the sum of its proper divisors (40416095972748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22271997474420 is a wasteful number, since it uses less digits than its factorization.

22271997474420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943455480 (or 1943455478 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 60.

The spelling of 22271997474420 in words is "twenty-two trillion, two hundred seventy-one billion, nine hundred ninety-seven million, four hundred seventy-four thousand, four hundred twenty".