210021220272 has 80 divisors (see below), whose sum is σ = 546376422528. Its totient is φ = 69514744320.

The previous prime is 210021220271. The next prime is 210021220273. The reversal of 210021220272 is 272022120012.

It is an interprime number because it is at equal distance from previous prime (210021220271) and next prime (210021220273).

It is not an unprimeable number, because it can be changed into a prime (210021220271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9087772 + ... + 9110852.

Almost surely, 2^210021220272 is an apocalyptic number.

It is an amenable number.

210021220272 is an abundant number, since it is smaller than the sum of its proper divisors (336355202256).

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

210021220272 is a wasteful number, since it uses less digits than its factorization.

210021220272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24418 (or 24412 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

Adding to 210021220272 its reverse (272022120012), we get a palindrome (482043340284).

The spelling of 210021220272 in words is "two hundred ten billion, twenty-one million, two hundred twenty thousand, two hundred seventy-two".