211221221000202 has 48 divisors (see below), whose sum is σ = 524505630242880. Its totient is φ = 60177960158976.

The previous prime is 211221221000173. The next prime is 211221221000213. The reversal of 211221221000202 is 202000122122112.

It is a happy number.

211221221000202 is a `hidden beast` number, since 21 + 1 + 221 + 221 + 0 + 0 + 0 + 202 = 666.

It is a super-2 number, since 2×211221221000202² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2374401552 + ... + 2374490507.

It is an arithmetic number, because the mean of its divisors is an integer number (10927200630060).

Almost surely, 2^{211221221000202} is an apocalyptic number.

211221221000202 is an abundant number, since it is smaller than the sum of its proper divisors (313284409242678).

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

211221221000202 is a wasteful number, since it uses less digits than its factorization.

211221221000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748892427 (or 4748892424 counting only the distinct ones).

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

Adding to 211221221000202 its reverse (202000122122112), we get a palindrome (413221343122314).

The spelling of 211221221000202 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred two", and thus it is an aban number.