21772267102 has 32 divisors (see below), whose sum is σ = 33312614400. Its totient is φ = 10670758560.

The previous prime is 21772267063. The next prime is 21772267103. The reversal of 21772267102 is 20176227712.

It is a super-2 number, since 2×21772267102² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21772267103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10158643 + ... + 10160785.

It is an arithmetic number, because the mean of its divisors is an integer number (1041019200).

Almost surely, 2^21772267102 is an apocalyptic number.

21772267102 is a deficient number, since it is larger than the sum of its proper divisors (11540347298).

21772267102 is a wasteful number, since it uses less digits than its factorization.

21772267102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728.

The product of its (nonzero) digits is 32928, while the sum is 37.

The spelling of 21772267102 in words is "twenty-one billion, seven hundred seventy-two million, two hundred sixty-seven thousand, one hundred two".