221002100202 has 32 divisors (see below), whose sum is σ = 476069110272. Its totient is φ = 67991419584.

The previous prime is 221002100201. The next prime is 221002100251. The reversal of 221002100202 is 202001200122.

It is a super-3 number, since 3×221002100202³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (221002100201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397863 + ... + 774789.

It is an arithmetic number, because the mean of its divisors is an integer number (14877159696).

Almost surely, 2^221002100202 is an apocalyptic number.

221002100202 is an abundant number, since it is smaller than the sum of its proper divisors (255067010070).

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

221002100202 is a wasteful number, since it uses less digits than its factorization.

221002100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384462.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221002100202 its reverse (202001200122), we get a palindrome (423003300324).

The spelling of 221002100202 in words is "two hundred twenty-one billion, two million, one hundred thousand, two hundred two".