22220102199961 has 2 divisors, whose sum is σ = 22220102199962. Its totient is φ = 22220102199960.

The previous prime is 22220102199941. The next prime is 22220102200003. The reversal of 22220102199961 is 16999120102222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21608961319936 + 611140880025 = 4648544^2 + 781755^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220102199961 - 2³¹ = 22217954716313 is a prime.

It is not a weakly prime, because it can be changed into another prime (22220102199941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110051099980 + 11110051099981.

It is an arithmetic number, because the mean of its divisors is an integer number (11110051099981).

Almost surely, 2^{22220102199961} is an apocalyptic number.

It is an amenable number.

22220102199961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220102199961 is an equidigital number, since it uses as much as digits as its factorization.

22220102199961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 22220102199961 in words is "twenty-two trillion, two hundred twenty billion, one hundred two million, one hundred ninety-nine thousand, nine hundred sixty-one".