121202221210 has 32 divisors (see below), whose sum is σ = 250511974272. Its totient is φ = 41358098880.

The previous prime is 121202221181. The next prime is 121202221213. The reversal of 121202221210 is 12122202121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121202221213) 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, 4088217 + ... + 4117756.

It is an arithmetic number, because the mean of its divisors is an integer number (7828499196).

Almost surely, 2^121202221210 is an apocalyptic number.

121202221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121202221210 is an abundant number, since it is smaller than the sum of its proper divisors (129309753062).

121202221210 is a wasteful number, since it uses less digits than its factorization.

121202221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8206198.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121202221210 its reverse (12122202121), we get a palindrome (133324423331).

The spelling of 121202221210 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, two hundred ten".