21011002210192 has 10 divisors (see below), whose sum is σ = 40708816782278. Its totient is φ = 10505501105088.

The previous prime is 21011002210127. The next prime is 21011002210193. The reversal of 21011002210192 is 29101220011012.

It can be written as a sum of positive squares in only one way, i.e., 18330591467776 + 2680410742416 = 4281424^2 + 1637196^2 .

It is not an unprimeable number, because it can be changed into a prime (21011002210193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656593819053 + ... + 656593819084.

Almost surely, 2^{21011002210192} is an apocalyptic number.

It is an amenable number.

21011002210192 is a deficient number, since it is larger than the sum of its proper divisors (19697814572086).

21011002210192 is a wasteful number, since it uses less digits than its factorization.

21011002210192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313187638145 (or 1313187638139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 21011002210192 in words is "twenty-one trillion, eleven billion, two million, two hundred ten thousand, one hundred ninety-two".