21352774222 has 32 divisors (see below), whose sum is σ = 35486472672. Its totient is φ = 9572183424.

The previous prime is 21352774207. The next prime is 21352774253. The reversal of 21352774222 is 22247725312.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 545788 + ... + 583600.

It is an arithmetic number, because the mean of its divisors is an integer number (1108952271).

Almost surely, 2^21352774222 is an apocalyptic number.

21352774222 is a deficient number, since it is larger than the sum of its proper divisors (14133698450).

21352774222 is a wasteful number, since it uses less digits than its factorization.

21352774222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38452.

The product of its digits is 94080, while the sum is 37.

The spelling of 21352774222 in words is "twenty-one billion, three hundred fifty-two million, seven hundred seventy-four thousand, two hundred twenty-two".