2201011220121 has 24 divisors (see below), whose sum is σ = 3506078554560. Its totient is φ = 1223728242912.

The previous prime is 2201011220119. The next prime is 2201011220123. The reversal of 2201011220121 is 1210221101022.

It is an interprime number because it is at equal distance from previous prime (2201011220119) and next prime (2201011220123).

It is not a de Polignac number, because 2201011220121 - 2¹ = 2201011220119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2201011220121.

It is not an unprimeable number, because it can be changed into a prime (2201011220123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202330581 + ... + 202341458.

It is an arithmetic number, because the mean of its divisors is an integer number (146086606440).

Almost surely, 2^{2201011220121} is an apocalyptic number.

2201011220121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2201011220121 is a deficient number, since it is larger than the sum of its proper divisors (1305067334439).

2201011220121 is a wasteful number, since it uses less digits than its factorization.

2201011220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404672093 (or 404672086 counting only the distinct ones).

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

Adding to 2201011220121 its reverse (1210221101022), we get a palindrome (3411232321143).

The spelling of 2201011220121 in words is "two trillion, two hundred one billion, eleven million, two hundred twenty thousand, one hundred twenty-one".