22261654999820 has 48 divisors (see below), whose sum is σ = 48977784726528. Its totient is φ = 8488796690880.

The previous prime is 22261654999817. The next prime is 22261654999823. The reversal of 22261654999820 is 2899945616222.

It is an interprime number because it is at equal distance from previous prime (22261654999817) and next prime (22261654999823).

It is not an unprimeable number, because it can be changed into a prime (22261654999823) 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, 267912902 + ... + 267995981.

It is an arithmetic number, because the mean of its divisors is an integer number (1020370515136).

Almost surely, 2^{22261654999820} is an apocalyptic number.

22261654999820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22261654999820 is an abundant number, since it is smaller than the sum of its proper divisors (26716129726708).

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

22261654999820 is a wasteful number, since it uses less digits than its factorization.

22261654999820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535908990 (or 535908988 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 22261654999820 in words is "twenty-two trillion, two hundred sixty-one billion, six hundred fifty-four million, nine hundred ninety-nine thousand, eight hundred twenty".