37021223281 has 9 divisors (see below), whose sum is σ = 43067071449. Its totient is φ = 31731322644.

The previous prime is 37021223191. The next prime is 37021223321. The reversal of 37021223281 is 18232212073.

The square root of 37021223281 is 192409.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 37021223281 - 2¹³ = 37021215089 is a prime.

It is a super-2 number, since 2×37021223281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37021223081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1333120 + ... + 1360606.

It is an arithmetic number, because the mean of its divisors is an integer number (4785230161).

Almost surely, 2^37021223281 is an apocalyptic number.

37021223281 is the 192409-th square number.

37021223281 is the 96205-th centered octagonal number.

It is an amenable number.

37021223281 is a deficient number, since it is larger than the sum of its proper divisors (6045848168).

37021223281 is an frugal number, since it uses more digits than its factorization.

37021223281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54988 (or 27494 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 37021223281 in words is "thirty-seven billion, twenty-one million, two hundred twenty-three thousand, two hundred eighty-one".