2211201291 has 16 divisors (see below), whose sum is σ = 3175902464. Its totient is φ = 1360377504.

The previous prime is 2211201283. The next prime is 2211201313. The reversal of 2211201291 is 1921021122.

It is not a de Polignac number, because 2211201291 - 2³ = 2211201283 is a prime.

It is a super-2 number, since 2×2211201291² = 9778822298640133362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211201221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277140 + ... + 285006.

It is an arithmetic number, because the mean of its divisors is an integer number (198493904).

Almost surely, 2^2211201291 is an apocalyptic number.

2211201291 is a deficient number, since it is larger than the sum of its proper divisors (964701173).

2211201291 is a wasteful number, since it uses less digits than its factorization.

2211201291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15090.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2211201291 is about 47023.4121582005. The cubic root of 2211201291 is about 1302.7950299044.

The spelling of 2211201291 in words is "two billion, two hundred eleven million, two hundred one thousand, two hundred ninety-one".