21470023572122 has 32 divisors (see below), whose sum is σ = 37131886641600. Its totient is φ = 9241713992448.

The previous prime is 21470023572097. The next prime is 21470023572133. The reversal of 21470023572122 is 22127532007412.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 573004208 + ... + 573041675.

It is an arithmetic number, because the mean of its divisors is an integer number (1160371457550).

Almost surely, 2^{21470023572122} is an apocalyptic number.

21470023572122 is a deficient number, since it is larger than the sum of its proper divisors (15661863069478).

21470023572122 is a wasteful number, since it uses less digits than its factorization.

21470023572122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146045950.

The product of its (nonzero) digits is 94080, while the sum is 38.

Adding to 21470023572122 its reverse (22127532007412), we get a palindrome (43597555579534).

The spelling of 21470023572122 in words is "twenty-one trillion, four hundred seventy billion, twenty-three million, five hundred seventy-two thousand, one hundred twenty-two".