122012121210 has 160 divisors (see below), whose sum is σ = 359597309760. Its totient is φ = 26420373504.

The previous prime is 122012121169. The next prime is 122012121227. The reversal of 122012121210 is 12121210221.

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 122012121210.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1323994 + ... + 1413146.

It is an arithmetic number, because the mean of its divisors is an integer number (2247483186).

Almost surely, 2^122012121210 is an apocalyptic number.

122012121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122012121210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179798654880).

122012121210 is an abundant number, since it is smaller than the sum of its proper divisors (237585188550).

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

122012121210 is an equidigital number, since it uses as much as digits as its factorization.

122012121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89210 (or 89189 counting only the distinct ones).

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

Adding to 122012121210 its reverse (12121210221), we get a palindrome (134133331431).

The spelling of 122012121210 in words is "one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, two hundred ten".