21048100272 has 60 divisors (see below), whose sum is σ = 60275359144. Its totient is φ = 6852867840.

The previous prime is 21048100261. The next prime is 21048100277. The reversal of 21048100272 is 27200184012.

It is not an unprimeable number, because it can be changed into a prime (21048100277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1693429 + ... + 1705812.

Almost surely, 2^21048100272 is an apocalyptic number.

It is an amenable number.

21048100272 is an abundant number, since it is smaller than the sum of its proper divisors (39227258872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21048100272 is a wasteful number, since it uses less digits than its factorization.

21048100272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399298 (or 3399289 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

Adding to 21048100272 its reverse (27200184012), we get a palindrome (48248284284).

The spelling of 21048100272 in words is "twenty-one billion, forty-eight million, one hundred thousand, two hundred seventy-two".