20701210701 has 4 divisors (see below), whose sum is σ = 27601614272. Its totient is φ = 13800807132.

The previous prime is 20701210669. The next prime is 20701210723. The reversal of 20701210701 is 10701210702.

It is a happy number.

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 not a de Polignac number, because 20701210701 - 2⁵ = 20701210669 is a prime.

It is a super-2 number, since 2×20701210701² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20701210781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3450201781 + ... + 3450201786.

It is an arithmetic number, because the mean of its divisors is an integer number (6900403568).

Almost surely, 2^20701210701 is an apocalyptic number.

It is an amenable number.

20701210701 is a deficient number, since it is larger than the sum of its proper divisors (6900403571).

20701210701 is an equidigital number, since it uses as much as digits as its factorization.

20701210701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900403570.

The product of its (nonzero) digits is 196, while the sum is 21.

Subtracting from 20701210701 its reverse (10701210702), we obtain a palindrome (9999999999).

The spelling of 20701210701 in words is "twenty billion, seven hundred one million, two hundred ten thousand, seven hundred one".