1211202010122 has 128 divisors (see below), whose sum is σ = 2831059123200. Its totient is φ = 342020136960.

The previous prime is 1211202010121. The next prime is 1211202010133. The reversal of 1211202010122 is 2210102021121.

It is not an unprimeable number, because it can be changed into a prime (1211202010121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 129549504 + ... + 129558852.

It is an arithmetic number, because the mean of its divisors is an integer number (22117649400).

Almost surely, 2^{1211202010122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211202010122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415529561600).

1211202010122 is an abundant number, since it is smaller than the sum of its proper divisors (1619857113078).

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

1211202010122 is a wasteful number, since it uses less digits than its factorization.

1211202010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11808.

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

Adding to 1211202010122 its reverse (2210102021121), we get a palindrome (3421304031243).

The spelling of 1211202010122 in words is "one trillion, two hundred eleven billion, two hundred two million, ten thousand, one hundred twenty-two".