211220000010 has 48 divisors (see below), whose sum is σ = 549262550304. Its totient is φ = 56316046176.

The previous prime is 211219999993. The next prime is 211220000021. The reversal of 211220000010 is 10000022112.

It is a super-2 number, since 2×211220000010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211219999947 and 211220000001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 364269 + ... + 745071.

It is an arithmetic number, because the mean of its divisors is an integer number (11442969798).

Almost surely, 2^211220000010 is an apocalyptic number.

211220000010 is an abundant number, since it is smaller than the sum of its proper divisors (338042550294).

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

211220000010 is a wasteful number, since it uses less digits than its factorization.

211220000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386979 (or 386976 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 211220000010 its reverse (10000022112), we get a palindrome (221220022122).

The spelling of 211220000010 in words is "two hundred eleven billion, two hundred twenty million, ten", and thus it is an aban number.