122221031 has 4 divisors (see below), whose sum is σ = 122429832. Its totient is φ = 122012232.

The previous prime is 122221019. The next prime is 122221039. The reversal of 122221031 is 130122221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122221031 is a prime.

It is a super-2 number, since 2×122221031² = 29875960837405922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122220997 and 122221015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221039) 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, 103520 + ... + 104693.

It is an arithmetic number, because the mean of its divisors is an integer number (30607458).

Almost surely, 2^122221031 is an apocalyptic number.

122221031 is a deficient number, since it is larger than the sum of its proper divisors (208801).

122221031 is an equidigital number, since it uses as much as digits as its factorization.

122221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208800.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 122221031 is about 11055.3620926680. The cubic root of 122221031 is about 496.2669053749.

Adding to 122221031 its reverse (130122221), we get a palindrome (252343252).

The spelling of 122221031 in words is "one hundred twenty-two million, two hundred twenty-one thousand, thirty-one".