21326121045442 has 32 divisors (see below), whose sum is σ = 32693727306240. Its totient is φ = 10428547149120.

The previous prime is 21326121045413. The next prime is 21326121045457. The reversal of 21326121045442 is 24454012162312.

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, 834963192 + ... + 834988732.

It is an arithmetic number, because the mean of its divisors is an integer number (1021678978320).

Almost surely, 2^{21326121045442} is an apocalyptic number.

21326121045442 is a deficient number, since it is larger than the sum of its proper divisors (11367606260798).

21326121045442 is a wasteful number, since it uses less digits than its factorization.

21326121045442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31746.

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 21326121045442 in words is "twenty-one trillion, three hundred twenty-six billion, one hundred twenty-one million, forty-five thousand, four hundred forty-two".