121222110210 has 64 divisors (see below), whose sum is σ = 292812105600. Its totient is φ = 32117783040.

The previous prime is 121222110199. The next prime is 121222110211. The reversal of 121222110210 is 12011222121.

121222110210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121222110210.

It is not an unprimeable number, because it can be changed into a prime (121222110211) 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, 2921469 + ... + 2962671.

It is an arithmetic number, because the mean of its divisors is an integer number (4575189150).

Almost surely, 2^121222110210 is an apocalyptic number.

121222110210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222110210 is an abundant number, since it is smaller than the sum of its proper divisors (171589995390).

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

121222110210 is a wasteful number, since it uses less digits than its factorization.

121222110210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41843.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121222110210 its reverse (12011222121), we get a palindrome (133233332331).

The spelling of 121222110210 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, two hundred ten".