212903929697 has 4 divisors (see below), whose sum is σ = 217855183920. Its totient is φ = 207952675476.

The previous prime is 212903929691. The next prime is 212903929699. The reversal of 212903929697 is 796929309212.

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 not a de Polignac number, because 212903929697 - 2²⁸ = 212635494241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212903929691) 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, 2475627047 + ... + 2475627132.

It is an arithmetic number, because the mean of its divisors is an integer number (54463795980).

Almost surely, 2^212903929697 is an apocalyptic number.

It is an amenable number.

212903929697 is a deficient number, since it is larger than the sum of its proper divisors (4951254223).

212903929697 is an equidigital number, since it uses as much as digits as its factorization.

212903929697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951254222.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 212903929697 in words is "two hundred twelve billion, nine hundred three million, nine hundred twenty-nine thousand, six hundred ninety-seven".