221021121101202 has 48 divisors (see below), whose sum is σ = 491830286564760. Its totient is φ = 71681285062656.

The previous prime is 221021121101159. The next prime is 221021121101251. The reversal of 221021121101202 is 202101121120122.

221021121101202 is a `hidden beast` number, since 221 + 0 + 21 + 121 + 101 + 202 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 189160165109601 + 31860955991601 = 13753551^2 + 5644551^2 .

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

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 23 ways as a sum of consecutive naturals, for example, 36030948 + ... + 41716560.

Almost surely, 2^{221021121101202} is an apocalyptic number.

221021121101202 is an abundant number, since it is smaller than the sum of its proper divisors (270809165463558).

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

221021121101202 is a wasteful number, since it uses less digits than its factorization.

221021121101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744027 (or 5744024 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221021121101202 its reverse (202101121120122), we get a palindrome (423122242221324).

The spelling of 221021121101202 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty-one million, one hundred one thousand, two hundred two".