20694962201 has 2 divisors, whose sum is σ = 20694962202. Its totient is φ = 20694962200.

The previous prime is 20694962191. The next prime is 20694962219. The reversal of 20694962201 is 10226949602.

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., 17516257801 + 3178704400 = 132349^2 + 56380^2 .

It is a cyclic number.

It is not a de Polignac number, because 20694962201 - 2²² = 20690767897 is a prime.

It is not a weakly prime, because it can be changed into another prime (20694962221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10347481100 + 10347481101.

It is an arithmetic number, because the mean of its divisors is an integer number (10347481101).

Almost surely, 2^20694962201 is an apocalyptic number.

It is an amenable number.

20694962201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20694962201 is an equidigital number, since it uses as much as digits as its factorization.

20694962201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 20694962201 in words is "twenty billion, six hundred ninety-four million, nine hundred sixty-two thousand, two hundred one".