21103100202102 has 8 divisors (see below), whose sum is σ = 42206200404216. Its totient is φ = 7034366734032.

The previous prime is 21103100202077. The next prime is 21103100202127. The reversal of 21103100202102 is 20120200130112.

It is an interprime number because it is at equal distance from previous prime (21103100202077) and next prime (21103100202127).

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

21103100202102 is an admirable number.

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, 1758591683503 + ... + 1758591683514.

It is an arithmetic number, because the mean of its divisors is an integer number (5275775050527).

Almost surely, 2^{21103100202102} is an apocalyptic number.

21103100202102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21103100202102 is a wasteful number, since it uses less digits than its factorization.

21103100202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517183367022.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21103100202102 its reverse (20120200130112), we get a palindrome (41223300332214).

The spelling of 21103100202102 in words is "twenty-one trillion, one hundred three billion, one hundred million, two hundred two thousand, one hundred two".