21021212312119 has 2 divisors, whose sum is σ = 21021212312120. Its totient is φ = 21021212312118.

The previous prime is 21021212312047. The next prime is 21021212312141. The reversal of 21021212312119 is 91121321212012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21021212312119 - 2⁷ = 21021212311991 is a prime.

It is a super-2 number, since 2×21021212312119² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21021212313119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510606156059 + 10510606156060.

It is an arithmetic number, because the mean of its divisors is an integer number (10510606156060).

Almost surely, 2^{21021212312119} is an apocalyptic number.

21021212312119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21021212312119 is an equidigital number, since it uses as much as digits as its factorization.

21021212312119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 21021212312119 in words is "twenty-one trillion, twenty-one billion, two hundred twelve million, three hundred twelve thousand, one hundred nineteen".