21110201220102 has 16 divisors (see below), whose sum is σ = 42221038045680. Its totient is φ = 7036627805792.

The previous prime is 21110201220049. The next prime is 21110201220127. The reversal of 21110201220102 is 20102210201112.

It is a congruent number.

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, 26051253 + ... + 26849360.

It is an arithmetic number, because the mean of its divisors is an integer number (2638814877855).

Almost surely, 2^{21110201220102} is an apocalyptic number.

21110201220102 is an abundant number, since it is smaller than the sum of its proper divisors (21110836825578).

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

21110201220102 is a wasteful number, since it uses less digits than its factorization.

21110201220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52967127.

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

Adding to 21110201220102 its reverse (20102210201112), we get a palindrome (41212411421214).

The spelling of 21110201220102 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, two hundred twenty thousand, one hundred two".