12121010192 has 10 divisors (see below), whose sum is σ = 23484457278. Its totient is φ = 6060505088.

The previous prime is 12121010179. The next prime is 12121010197. The reversal of 12121010192 is 29101012121.

It can be written as a sum of positive squares in only one way, i.e., 10297378576 + 1823631616 = 101476^2 + 42704^2 .

It is not an unprimeable number, because it can be changed into a prime (12121010197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378781553 + ... + 378781584.

Almost surely, 2^12121010192 is an apocalyptic number.

It is an amenable number.

12121010192 is a deficient number, since it is larger than the sum of its proper divisors (11363447086).

12121010192 is an equidigital number, since it uses as much as digits as its factorization.

12121010192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757563145 (or 757563139 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12121010192 in words is "twelve billion, one hundred twenty-one million, ten thousand, one hundred ninety-two".