2211220121201 has 72 divisors (see below), whose sum is σ = 2981622074400. Its totient is φ = 1629356601600.

The previous prime is 2211220121179. The next prime is 2211220121249. The reversal of 2211220121201 is 1021210221122.

It is a de Polignac number, because none of the positive numbers 2^k-2211220121201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211220121201.

It is not an unprimeable number, because it can be changed into a prime (2211220120201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9163901 + ... + 9402101.

It is an arithmetic number, because the mean of its divisors is an integer number (41411417700).

Almost surely, 2^{2211220121201} is an apocalyptic number.

It is an amenable number.

2211220121201 is a deficient number, since it is larger than the sum of its proper divisors (770401953199).

2211220121201 is a wasteful number, since it uses less digits than its factorization.

2211220121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238319 (or 238299 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211220121201 its reverse (1021210221122), we get a palindrome (3232430342323).

The spelling of 2211220121201 in words is "two trillion, two hundred eleven billion, two hundred twenty million, one hundred twenty-one thousand, two hundred one".