221212201002102 has 192 divisors, whose sum is σ = 488540091985920. Its totient is φ = 72332368416000.

The previous prime is 221212201002053. The next prime is 221212201002127. The reversal of 221212201002102 is 201200102212122.

It is a happy number.

221212201002102 is a `hidden beast` number, since 221 + 2 + 1 + 220 + 10 + 0 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 90401388643 + ... + 90401391089.

It is an arithmetic number, because the mean of its divisors is an integer number (2544479645760).

Almost surely, 2^{221212201002102} is an apocalyptic number.

221212201002102 is an abundant number, since it is smaller than the sum of its proper divisors (267327890983818).

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

221212201002102 is a wasteful number, since it uses less digits than its factorization.

221212201002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739 (or 3736 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221212201002102 its reverse (201200102212122), we get a palindrome (422412303214224).

The spelling of 221212201002102 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred one million, two thousand, one hundred two".