1001211220122 has 96 divisors (see below), whose sum is σ = 2150218732032. Its totient is φ = 310203470016.

The previous prime is 1001211220117. The next prime is 1001211220187. The reversal of 1001211220122 is 2210221121001.

1001211220122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171349333 + ... + 171355175.

It is an arithmetic number, because the mean of its divisors is an integer number (22398111792).

Almost surely, 2^{1001211220122} is an apocalyptic number.

1001211220122 is an abundant number, since it is smaller than the sum of its proper divisors (1149007511910).

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

1001211220122 is a wasteful number, since it uses less digits than its factorization.

1001211220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852 (or 6815 counting only the distinct ones).

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

Adding to 1001211220122 its reverse (2210221121001), we get a palindrome (3211432341123).

The spelling of 1001211220122 in words is "one trillion, one billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-two".