10131221219 has 16 divisors (see below), whose sum is σ = 11760231168. Its totient is φ = 8547831072.

The previous prime is 10131221207. The next prime is 10131221231. The reversal of 10131221219 is 91212213101.

It is an interprime number because it is at equal distance from previous prime (10131221207) and next prime (10131221231).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10131221219 is a prime.

It is a super-2 number, since 2×10131221219² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10131221194 and 10131221203.

It is not an unprimeable number, because it can be changed into a prime (10131221239) 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, 674024 + ... + 688890.

It is an arithmetic number, because the mean of its divisors is an integer number (735014448).

Almost surely, 2^10131221219 is an apocalyptic number.

10131221219 is a deficient number, since it is larger than the sum of its proper divisors (1629009949).

10131221219 is a wasteful number, since it uses less digits than its factorization.

10131221219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16394.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 10131221219 in words is "ten billion, one hundred thirty-one million, two hundred twenty-one thousand, two hundred nineteen".