21214030036091 has 2 divisors, whose sum is σ = 21214030036092. Its totient is φ = 21214030036090.

The previous prime is 21214030036079. The next prime is 21214030036123. The reversal of 21214030036091 is 19063003041212.

It is an a-pointer prime, because the next prime (21214030036123) can be obtained adding 21214030036091 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21214030036091 - 2¹⁰ = 21214030035067 is a prime.

It is a super-2 number, since 2×21214030036091² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21214030036051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607015018045 + 10607015018046.

It is an arithmetic number, because the mean of its divisors is an integer number (10607015018046).

Almost surely, 2^{21214030036091} is an apocalyptic number.

21214030036091 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214030036091 is an equidigital number, since it uses as much as digits as its factorization.

21214030036091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 21214030036091 in words is "twenty-one trillion, two hundred fourteen billion, thirty million, thirty-six thousand, ninety-one".