21012201220102 has 8 divisors (see below), whose sum is σ = 32188903996896. Its totient is φ = 10282566554472.

The previous prime is 21012201220081. The next prime is 21012201220159. The reversal of 21012201220102 is 20102210221012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21012201220102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111767027673 + ... + 111767027860.

It is an arithmetic number, because the mean of its divisors is an integer number (4023612999612).

Almost surely, 2^{21012201220102} is an apocalyptic number.

21012201220102 is a deficient number, since it is larger than the sum of its proper divisors (11176702776794).

21012201220102 is a wasteful number, since it uses less digits than its factorization.

21012201220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223534055582.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21012201220102 its reverse (20102210221012), we get a palindrome (41114411441114).

The spelling of 21012201220102 in words is "twenty-one trillion, twelve billion, two hundred one million, two hundred twenty thousand, one hundred two".