10221772515 has 16 divisors (see below), whose sum is σ = 16366560000. Its totient is φ = 5447704032.

The previous prime is 10221772499. The next prime is 10221772531. The reversal of 10221772515 is 51527712201.

It is an interprime number because it is at equal distance from previous prime (10221772499) and next prime (10221772531).

It is not a de Polignac number, because 10221772515 - 2⁴ = 10221772499 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222565 + ... + 264534.

It is an arithmetic number, because the mean of its divisors is an integer number (1022910000).

Almost surely, 2^10221772515 is an apocalyptic number.

10221772515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10221772515 is a deficient number, since it is larger than the sum of its proper divisors (6144787485).

10221772515 is a wasteful number, since it uses less digits than its factorization.

10221772515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488506.

The product of its (nonzero) digits is 9800, while the sum is 33.

The spelling of 10221772515 in words is "ten billion, two hundred twenty-one million, seven hundred seventy-two thousand, five hundred fifteen".