1211011210122 has 128 divisors (see below), whose sum is σ = 2860211160576. Its totient is φ = 334598003712.

The previous prime is 1211011210117. The next prime is 1211011210141. The reversal of 1211011210122 is 2210121101121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 488901148 + ... + 488903624.

It is an arithmetic number, because the mean of its divisors is an integer number (22345399692).

Almost surely, 2^{1211011210122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211011210122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430105580288).

1211011210122 is an abundant number, since it is smaller than the sum of its proper divisors (1649199950454).

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

1211011210122 is a wasteful number, since it uses less digits than its factorization.

1211011210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1211011210122 its reverse (2210121101121), we get a palindrome (3421132311243).

The spelling of 1211011210122 in words is "one trillion, two hundred eleven billion, eleven million, two hundred ten thousand, one hundred twenty-two".