1222540151 has 8 divisors (see below), whose sum is σ = 1425703200. Its totient is φ = 1047891264.

The previous prime is 1222540141. The next prime is 1222540157. The reversal of 1222540151 is 1510452221.

It is not a de Polignac number, because 1222540151 - 2¹⁰ = 1222539127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222540157) 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, 1781786 + ... + 1782471.

It is an arithmetic number, because the mean of its divisors is an integer number (178212900).

Almost surely, 2^1222540151 is an apocalyptic number.

1222540151 is a deficient number, since it is larger than the sum of its proper divisors (203163049).

1222540151 is an frugal number, since it uses more digits than its factorization.

1222540151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564278 (or 3564264 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1222540151 is about 34964.8416412830. The cubic root of 1222540151 is about 1069.2708080950.

Adding to 1222540151 its reverse (1510452221), we get a palindrome (2732992372).

The spelling of 1222540151 in words is "one billion, two hundred twenty-two million, five hundred forty thousand, one hundred fifty-one".