211211210101010 has 32 divisors (see below), whose sum is σ = 438793529571072. Its totient is φ = 71698289140800.

The previous prime is 211211210100959. The next prime is 211211210101063. The reversal of 211211210101010 is 10101012112112.

It is a super-2 number, since 2×211211210101010² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14937136502 + ... + 14937150641.

It is an arithmetic number, because the mean of its divisors is an integer number (13712297799096).

Almost surely, 2^{211211210101010} is an apocalyptic number.

211211210101010 is an abundant number, since it is smaller than the sum of its proper divisors (227582319470062).

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

211211210101010 is a wasteful number, since it uses less digits than its factorization.

211211210101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29874287258.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211211210101010 its reverse (10101012112112), we get a palindrome (221312222213122).

The spelling of 211211210101010 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred ten million, one hundred one thousand, ten".