21322033854 has 32 divisors (see below), whose sum is σ = 47000411136. Its totient is φ = 6394609920.

The previous prime is 21322033849. The next prime is 21322033861. The reversal of 21322033854 is 45833022312.

It is a super-2 number, since 2×21322033854² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1658862 + ... + 1671665.

It is an arithmetic number, because the mean of its divisors is an integer number (1468762848).

Almost surely, 2^21322033854 is an apocalyptic number.

21322033854 is an abundant number, since it is smaller than the sum of its proper divisors (25678377282).

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

21322033854 is a wasteful number, since it uses less digits than its factorization.

21322033854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330640.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 21322033854 in words is "twenty-one billion, three hundred twenty-two million, thirty-three thousand, eight hundred fifty-four".