211220231010 has 16 divisors (see below), whose sum is σ = 506928554496. Its totient is φ = 56325394928.

The previous prime is 211220230999. The next prime is 211220231051. The reversal of 211220231010 is 10132022112.

It is a super-2 number, since 2×211220231010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3520337154 + ... + 3520337213.

It is an arithmetic number, because the mean of its divisors is an integer number (31683034656).

Almost surely, 2^211220231010 is an apocalyptic number.

211220231010 is an abundant number, since it is smaller than the sum of its proper divisors (295708323486).

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

211220231010 is a wasteful number, since it uses less digits than its factorization.

211220231010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040674377.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 211220231010 its reverse (10132022112), we get a palindrome (221352253122).

The spelling of 211220231010 in words is "two hundred eleven billion, two hundred twenty million, two hundred thirty-one thousand, ten".