20722796111 has 2 divisors, whose sum is σ = 20722796112. Its totient is φ = 20722796110.

The previous prime is 20722796093. The next prime is 20722796131. The reversal of 20722796111 is 11169722702.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20722796111 - 2¹⁸ = 20722533967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20722796131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10361398055 + 10361398056.

It is an arithmetic number, because the mean of its divisors is an integer number (10361398056).

Almost surely, 2^20722796111 is an apocalyptic number.

20722796111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20722796111 is an equidigital number, since it uses as much as digits as its factorization.

20722796111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 20722796111 in words is "twenty billion, seven hundred twenty-two million, seven hundred ninety-six thousand, one hundred eleven".