21112210211010 has 64 divisors (see below), whose sum is σ = 51384652750080. Its totient is φ = 5550916965120.

The previous prime is 21112210211003. The next prime is 21112210211023. The reversal of 21112210211010 is 1011201221112.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 14210361 + ... + 15625580.

It is an arithmetic number, because the mean of its divisors is an integer number (802885199220).

Almost surely, 2^{21112210211010} is an apocalyptic number.

21112210211010 is an abundant number, since it is smaller than the sum of its proper divisors (30272442539070).

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

21112210211010 is a wasteful number, since it uses less digits than its factorization.

21112210211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29836283.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21112210211010 its reverse (1011201221112), we get a palindrome (22123411432122).

The spelling of 21112210211010 in words is "twenty-one trillion, one hundred twelve billion, two hundred ten million, two hundred eleven thousand, ten".