667022101 has 4 divisors (see below), whose sum is σ = 667076704. Its totient is φ = 666967500.

The previous prime is 667022077. The next prime is 667022107. The reversal of 667022101 is 101220766.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 667022101 - 2⁷ = 667021973 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 (667022107) 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, 376 + ... + 36526.

It is an arithmetic number, because the mean of its divisors is an integer number (166769176).

Almost surely, 2^667022101 is an apocalyptic number.

It is an amenable number.

667022101 is a deficient number, since it is larger than the sum of its proper divisors (54603).

667022101 is a wasteful number, since it uses less digits than its factorization.

667022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54602.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 667022101 is about 25826.7710138143. The cubic root of 667022101 is about 873.7356873989.

Adding to 667022101 its reverse (101220766), we get a palindrome (768242867).

The spelling of 667022101 in words is "six hundred sixty-seven million, twenty-two thousand, one hundred one".