372012221 has 16 divisors (see below), whose sum is σ = 442197888. Its totient is φ = 306331200.

The previous prime is 372012217. The next prime is 372012253. The reversal of 372012221 is 122210273.

It is not a de Polignac number, because 372012221 - 2² = 372012217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 372012193 and 372012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (372012211) 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, 8231 + ... + 28491.

It is an arithmetic number, because the mean of its divisors is an integer number (27637368).

Almost surely, 2^372012221 is an apocalyptic number.

It is an amenable number.

372012221 is a deficient number, since it is larger than the sum of its proper divisors (70185667).

372012221 is a wasteful number, since it uses less digits than its factorization.

372012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20372.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 372012221 is about 19287.6183340505. The cubic root of 372012221 is about 719.2045104472.

Adding to 372012221 its reverse (122210273), we get a palindrome (494222494).

The spelling of 372012221 in words is "three hundred seventy-two million, twelve thousand, two hundred twenty-one".