37097201221 has 4 divisors (see below), whose sum is σ = 37179823500. Its totient is φ = 37014578944.

The previous prime is 37097201213. The next prime is 37097201231. The reversal of 37097201221 is 12210279073.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12210279073 = 19 ⋅642646267.

It can be written as a sum of positive squares in 2 ways, for example, as 31545312100 + 5551889121 = 177610^2 + 74511^2 .

It is a cyclic number.

It is not a de Polignac number, because 37097201221 - 2³ = 37097201213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37097201201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41310466 + ... + 41311363.

It is an arithmetic number, because the mean of its divisors is an integer number (9294955875).

Almost surely, 2^37097201221 is an apocalyptic number.

It is an amenable number.

37097201221 is a deficient number, since it is larger than the sum of its proper divisors (82622279).

37097201221 is an equidigital number, since it uses as much as digits as its factorization.

37097201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82622278.

The product of its (nonzero) digits is 10584, while the sum is 34.

The spelling of 37097201221 in words is "thirty-seven billion, ninety-seven million, two hundred one thousand, two hundred twenty-one".