20722701033 has 6 divisors (see below), whose sum is σ = 29932790394. Its totient is φ = 13815134016.

The previous prime is 20722701029. The next prime is 20722701049. The reversal of 20722701033 is 33010722702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20722178304 + 522729 = 143952^2 + 723^2 .

It is not a de Polignac number, because 20722701033 - 2² = 20722701029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20722700988 and 20722701006.

It is not an unprimeable number, because it can be changed into a prime (20722701073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1151261160 + ... + 1151261177.

It is an arithmetic number, because the mean of its divisors is an integer number (4988798399).

Almost surely, 2^20722701033 is an apocalyptic number.

It is an amenable number.

20722701033 is a deficient number, since it is larger than the sum of its proper divisors (9210089361).

20722701033 is a wasteful number, since it uses less digits than its factorization.

20722701033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302522343 (or 2302522340 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The spelling of 20722701033 in words is "twenty billion, seven hundred twenty-two million, seven hundred one thousand, thirty-three".