10211215155 has 16 divisors (see below), whose sum is σ = 17299000224. Its totient is φ = 5125629440.

The previous prime is 10211215153. The next prime is 10211215169. The reversal of 10211215155 is 55151211201.

It is not a de Polignac number, because 10211215155 - 2¹ = 10211215153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10211215153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20021736 + ... + 20022245.

It is an arithmetic number, because the mean of its divisors is an integer number (1081187514).

Almost surely, 2^10211215155 is an apocalyptic number.

10211215155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10211215155 is a deficient number, since it is larger than the sum of its proper divisors (7087785069).

10211215155 is a wasteful number, since it uses less digits than its factorization.

10211215155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40044006.

The product of its (nonzero) digits is 500, while the sum is 24.

Adding to 10211215155 its reverse (55151211201), we get a palindrome (65362426356).

The spelling of 10211215155 in words is "ten billion, two hundred eleven million, two hundred fifteen thousand, one hundred fifty-five".