221000102111200 has 72 divisors (see below), whose sum is σ = 552063394696968. Its totient is φ = 86344225927680.

The previous prime is 221000102111023. The next prime is 221000102111207. The reversal of 221000102111200 is 2111201000122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000102111207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3212176387 + ... + 3212245186.

It is an arithmetic number, because the mean of its divisors is an integer number (7667547148569).

Almost surely, 2^{221000102111200} is an apocalyptic number.

221000102111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221000102111200 is an abundant number, since it is smaller than the sum of its proper divisors (331063292585768).

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

221000102111200 is a wasteful number, since it uses less digits than its factorization.

221000102111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424421636 (or 6424421623 counting only the distinct ones).

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

Adding to 221000102111200 its reverse (2111201000122), we get a palindrome (223111303111322).

The spelling of 221000102111200 in words is "two hundred twenty-one trillion, one hundred two million, one hundred eleven thousand, two hundred".