21202202011110 has 32 divisors (see below), whose sum is σ = 50885662002912. Its totient is φ = 5653878627840.

The previous prime is 21202202011103. The next prime is 21202202011147. The reversal of 21202202011110 is 1111020220212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21202202011110.

It is a congruent 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, 1607320 + ... + 6707300.

It is an arithmetic number, because the mean of its divisors is an integer number (1590176937591).

Almost surely, 2^{21202202011110} is an apocalyptic number.

21202202011110 is an abundant number, since it is smaller than the sum of its proper divisors (29683459991802).

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

21202202011110 is a wasteful number, since it uses less digits than its factorization.

21202202011110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238568.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21202202011110 its reverse (1111020220212), we get a palindrome (22313222231322).

The spelling of 21202202011110 in words is "twenty-one trillion, two hundred two billion, two hundred two million, eleven thousand, one hundred ten".