121210222210 has 64 divisors (see below), whose sum is σ = 274708018944. Its totient is φ = 37405728000.

The previous prime is 121210222181. The next prime is 121210222213. The reversal of 121210222210 is 12222012121.

It is a happy number.

121210222210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121210222213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701517 + ... + 857056.

It is an arithmetic number, because the mean of its divisors is an integer number (4292312796).

Almost surely, 2^121210222210 is an apocalyptic number.

121210222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210222210 is an abundant number, since it is smaller than the sum of its proper divisors (153497796734).

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

121210222210 is a wasteful number, since it uses less digits than its factorization.

121210222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558699.

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

Adding to 121210222210 its reverse (12222012121), we get a palindrome (133432234331).

The spelling of 121210222210 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, two hundred ten".