221210101002100 has 72 divisors (see below), whose sum is σ = 548604878443328. Its totient is φ = 75842933990400.

The previous prime is 221210101002097. The next prime is 221210101002103. The reversal of 221210101002100 is 1200101012122.

It is an interprime number because it is at equal distance from previous prime (221210101002097) and next prime (221210101002103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210101002103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106831219 + ... + 108882181.

Almost surely, 2^{221210101002100} is an apocalyptic number.

221210101002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221210101002100 is an abundant number, since it is smaller than the sum of its proper divisors (327394777441228).

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

221210101002100 is a wasteful number, since it uses less digits than its factorization.

221210101002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205065 (or 2205058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221210101002100 its reverse (1200101012122), we get a palindrome (222410202014222).

The spelling of 221210101002100 in words is "two hundred twenty-one trillion, two hundred ten billion, one hundred one million, two thousand, one hundred".