1222521051 has 8 divisors (see below), whose sum is σ = 1725912144. Its totient is φ = 767072000.

The previous prime is 1222521031. The next prime is 1222521101. The reversal of 1222521051 is 1501252221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222521051 - 2²³ = 1214132443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222521031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11985450 + ... + 11985551.

It is an arithmetic number, because the mean of its divisors is an integer number (215739018).

Almost surely, 2^1222521051 is an apocalyptic number.

1222521051 is a deficient number, since it is larger than the sum of its proper divisors (503391093).

1222521051 is a wasteful number, since it uses less digits than its factorization.

1222521051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23971021.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1222521051 is about 34964.5685087061. The cubic root of 1222521051 is about 1069.2652395856.

Adding to 1222521051 its reverse (1501252221), we get a palindrome (2723773272).

The spelling of 1222521051 in words is "one billion, two hundred twenty-two million, five hundred twenty-one thousand, fifty-one".