2231212101959 has 2 divisors, whose sum is σ = 2231212101960. Its totient is φ = 2231212101958.

The previous prime is 2231212101887. The next prime is 2231212102073. The reversal of 2231212101959 is 9591012121322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2231212101959 - 2⁴⁰ = 1131700474183 is a prime.

It is a super-3 number, since 3×2231212101959³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231212121959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115606050979 + 1115606050980.

It is an arithmetic number, because the mean of its divisors is an integer number (1115606050980).

Almost surely, 2^{2231212101959} is an apocalyptic number.

2231212101959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231212101959 is an equidigital number, since it uses as much as digits as its factorization.

2231212101959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 2231212101959 in words is "two trillion, two hundred thirty-one billion, two hundred twelve million, one hundred one thousand, nine hundred fifty-nine".