15222421445 has 32 divisors (see below), whose sum is σ = 22820990976. Its totient is φ = 9469857600.

The previous prime is 15222421399. The next prime is 15222421451. The reversal of 15222421445 is 54412422251.

It is not a de Polignac number, because 15222421445 - 2¹² = 15222417349 is a prime.

It is a super-2 number, since 2×15222421445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148772 + ... + 229298.

It is an arithmetic number, because the mean of its divisors is an integer number (713155968).

Almost surely, 2^15222421445 is an apocalyptic number.

It is an amenable number.

15222421445 is a deficient number, since it is larger than the sum of its proper divisors (7598569531).

15222421445 is a wasteful number, since it uses less digits than its factorization.

15222421445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81041.

The product of its digits is 25600, while the sum is 32.

Adding to 15222421445 its reverse (54412422251), we get a palindrome (69634843696).

The spelling of 15222421445 in words is "fifteen billion, two hundred twenty-two million, four hundred twenty-one thousand, four hundred forty-five".