21630222355510 has 16 divisors (see below), whose sum is σ = 38934481340016. Its totient is φ = 8652070919968.

The previous prime is 21630222355459. The next prime is 21630222355529. The reversal of 21630222355510 is 1555322203612.

It is a self number, because there is not a number n which added to its sum of digits gives 21630222355510.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3483612 + ... + 7442848.

It is an arithmetic number, because the mean of its divisors is an integer number (2433405083751).

Almost surely, 2^{21630222355510} is an apocalyptic number.

21630222355510 is a deficient number, since it is larger than the sum of its proper divisors (17304258984506).

21630222355510 is a wasteful number, since it uses less digits than its factorization.

21630222355510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505567.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 21630222355510 in words is "twenty-one trillion, six hundred thirty billion, two hundred twenty-two million, three hundred fifty-five thousand, five hundred ten".