679990122101 has 4 divisors (see below), whose sum is σ = 679992016704. Its totient is φ = 679988227500.

The previous prime is 679990122079. The next prime is 679990122107. The reversal of 679990122101 is 101221099976.

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 679990122101 - 2³⁴ = 662810252917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679990122107) 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, 225725 + ... + 1187826.

It is an arithmetic number, because the mean of its divisors is an integer number (169998004176).

Almost surely, 2^679990122101 is an apocalyptic number.

It is an amenable number.

679990122101 is a deficient number, since it is larger than the sum of its proper divisors (1894603).

679990122101 is a wasteful number, since it uses less digits than its factorization.

679990122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894602.

The product of its (nonzero) digits is 122472, while the sum is 47.

The spelling of 679990122101 in words is "six hundred seventy-nine billion, nine hundred ninety million, one hundred twenty-two thousand, one hundred one".