22210623661 has 4 divisors (see below), whose sum is σ = 22927095424. Its totient is φ = 21494151900.

The previous prime is 22210623649. The next prime is 22210623697. The reversal of 22210623661 is 16632601222.

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 a de Polignac number, because none of the positive numbers 2^k-22210623661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 716471731 = 22210623661 / (2 + 2 + 2 + 1 + 0 + 6 + 2 + 3 + 6 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210623961) 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, 358235835 + ... + 358235896.

It is an arithmetic number, because the mean of its divisors is an integer number (5731773856).

Almost surely, 2^22210623661 is an apocalyptic number.

It is an amenable number.

22210623661 is a deficient number, since it is larger than the sum of its proper divisors (716471763).

22210623661 is an equidigital number, since it uses as much as digits as its factorization.

22210623661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716471762.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 22210623661 in words is "twenty-two billion, two hundred ten million, six hundred twenty-three thousand, six hundred sixty-one".