21100121202119 has 2 divisors, whose sum is σ = 21100121202120. Its totient is φ = 21100121202118.

The previous prime is 21100121202101. The next prime is 21100121202133. The reversal of 21100121202119 is 91120212100112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21100121202119 - 2²⁰ = 21100120153543 is a prime.

It is a super-2 number, since 2×21100121202119² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21100121202094 and 21100121202103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100121202319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550060601059 + 10550060601060.

It is an arithmetic number, because the mean of its divisors is an integer number (10550060601060).

Almost surely, 2^{21100121202119} is an apocalyptic number.

21100121202119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100121202119 is an equidigital number, since it uses as much as digits as its factorization.

21100121202119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 21100121202119 in words is "twenty-one trillion, one hundred billion, one hundred twenty-one million, two hundred two thousand, one hundred nineteen".