1200122100212 has 96 divisors (see below), whose sum is σ = 2492050176000. Its totient is φ = 495023840640.

The previous prime is 1200122100211. The next prime is 1200122100257. The reversal of 1200122100212 is 2120012210021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200122100211) 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, 234992963 + ... + 234998069.

It is an arithmetic number, because the mean of its divisors is an integer number (25958856000).

Almost surely, 2^{1200122100212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200122100212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246025088000).

1200122100212 is an abundant number, since it is smaller than the sum of its proper divisors (1291928075788).

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

1200122100212 is a wasteful number, since it uses less digits than its factorization.

1200122100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7981 (or 7979 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200122100212 its reverse (2120012210021), we get a palindrome (3320134310233).

It can be divided in two parts, 120012210021 and 2, that multiplied together give a palindrome (240024420042).

The spelling of 1200122100212 in words is "one trillion, two hundred billion, one hundred twenty-two million, one hundred thousand, two hundred twelve".