211102121010 has 256 divisors, whose sum is σ = 581577117696. Its totient is φ = 48585600000.

The previous prime is 211102121003. The next prime is 211102121101. The reversal of 211102121010 is 10121201112.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 87556705 + ... + 87559115.

It is an arithmetic number, because the mean of its divisors is an integer number (2271785616).

Almost surely, 2^211102121010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211102121010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290788558848).

211102121010 is an abundant number, since it is smaller than the sum of its proper divisors (370474996686).

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

211102121010 is a wasteful number, since it uses less digits than its factorization.

211102121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211102121010 its reverse (10121201112), we get a palindrome (221223322122).

The spelling of 211102121010 in words is "two hundred eleven billion, one hundred two million, one hundred twenty-one thousand, ten".