21101212119 has 32 divisors (see below), whose sum is σ = 30711018240. Its totient is φ = 12809541888.

The previous prime is 21101212103. The next prime is 21101212123. The reversal of 21101212119 is 91121210112.

It is not a de Polignac number, because 21101212119 - 2⁴ = 21101212103 is a prime.

It is a super-2 number, since 2×21101212119² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21101212095 and 21101212104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101212519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1530792 + ... + 1544514.

It is an arithmetic number, because the mean of its divisors is an integer number (959719320).

Almost surely, 2^21101212119 is an apocalyptic number.

21101212119 is a deficient number, since it is larger than the sum of its proper divisors (9609806121).

21101212119 is a wasteful number, since it uses less digits than its factorization.

21101212119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 21101212119 in words is "twenty-one billion, one hundred one million, two hundred twelve thousand, one hundred nineteen".