212026690169 has 4 divisors (see below), whose sum is σ = 242316217344. Its totient is φ = 181737162996.

The previous prime is 212026690159. The next prime is 212026690201. The reversal of 212026690169 is 961096620212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212026690169 - 2⁸ = 212026689913 is a prime.

It is a super-2 number, since 2×212026690169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212026690159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15144763577 + ... + 15144763590.

It is an arithmetic number, because the mean of its divisors is an integer number (60579054336).

Almost surely, 2^212026690169 is an apocalyptic number.

It is an amenable number.

212026690169 is a deficient number, since it is larger than the sum of its proper divisors (30289527175).

212026690169 is an equidigital number, since it uses as much as digits as its factorization.

212026690169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30289527174.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 212026690169 in words is "two hundred twelve billion, twenty-six million, six hundred ninety thousand, one hundred sixty-nine".