137222401 has 4 divisors (see below), whose sum is σ = 137596672. Its totient is φ = 136848132.

The previous prime is 137222387. The next prime is 137222411. The reversal of 137222401 is 104222731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137222401 - 2⁷ = 137222273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137222411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186585 + ... + 187318.

It is an arithmetic number, because the mean of its divisors is an integer number (34399168).

Almost surely, 2^137222401 is an apocalyptic number.

It is an amenable number.

137222401 is a deficient number, since it is larger than the sum of its proper divisors (374271).

137222401 is an equidigital number, since it uses as much as digits as its factorization.

137222401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374270.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 137222401 is about 11714.1965580231. The cubic root of 137222401 is about 515.7924783466.

The spelling of 137222401 in words is "one hundred thirty-seven million, two hundred twenty-two thousand, four hundred one".