221002121202 has 32 divisors (see below), whose sum is σ = 455537322240. Its totient is φ = 71436511440.

The previous prime is 221002121129. The next prime is 221002121203. The reversal of 221002121202 is 202121200122.

It is not an unprimeable number, because it can be changed into a prime (221002121203) 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, 3045424 + ... + 3117147.

It is an arithmetic number, because the mean of its divisors is an integer number (14235541320).

Almost surely, 2^221002121202 is an apocalyptic number.

221002121202 is an abundant number, since it is smaller than the sum of its proper divisors (234535201038).

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

221002121202 is a wasteful number, since it uses less digits than its factorization.

221002121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162758.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221002121202 its reverse (202121200122), we get a palindrome (423123321324).

The spelling of 221002121202 in words is "two hundred twenty-one billion, two million, one hundred twenty-one thousand, two hundred two".