1222120031 has 4 divisors (see below), whose sum is σ = 1333221864. Its totient is φ = 1111018200.

The previous prime is 1222120013. The next prime is 1222120051. The reversal of 1222120031 is 1300212221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1222120031 - 2¹⁴ = 1222103647 is a prime.

It is a super-2 number, since 2×1222120031² = 2987154740342881922, 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 = 1222119988 and 1222120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222120051) 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, 55550900 + ... + 55550921.

It is an arithmetic number, because the mean of its divisors is an integer number (333305466).

Almost surely, 2^1222120031 is an apocalyptic number.

1222120031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222120031 is a deficient number, since it is larger than the sum of its proper divisors (111101833).

1222120031 is a wasteful number, since it uses less digits than its factorization.

1222120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111101832.

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

The square root of 1222120031 is about 34958.8333758437. The cubic root of 1222120031 is about 1069.1483108178.

Adding to 1222120031 its reverse (1300212221), we get a palindrome (2522332252).

The spelling of 1222120031 in words is "one billion, two hundred twenty-two million, one hundred twenty thousand, thirty-one".