21442303190 has 128 divisors (see below), whose sum is σ = 48625975296. Its totient is φ = 6613488000.

The previous prime is 21442303189. The next prime is 21442303217. The reversal of 21442303190 is 9130324412.

It is a super-2 number, since 2×21442303190² (a number of 21 digits) contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 44029127 + ... + 44029613.

It is an arithmetic number, because the mean of its divisors is an integer number (379890432).

Almost surely, 2^21442303190 is an apocalyptic number.

21442303190 is an abundant number, since it is smaller than the sum of its proper divisors (27183672106).

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

21442303190 is a wasteful number, since it uses less digits than its factorization.

21442303190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 21442303190 in words is "twenty-one billion, four hundred forty-two million, three hundred three thousand, one hundred ninety".