20122311029 has 4 divisors (see below), whose sum is σ = 20317673376. Its totient is φ = 19926948684.

The previous prime is 20122310849. The next prime is 20122311031. The reversal of 20122311029 is 92011322102.

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 a cyclic number.

It is not a de Polignac number, because 20122311029 - 2¹² = 20122306933 is a prime.

It is a super-2 number, since 2×20122311029² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20122310995 and 20122311013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122311049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97681019 + ... + 97681224.

It is an arithmetic number, because the mean of its divisors is an integer number (5079418344).

Almost surely, 2^20122311029 is an apocalyptic number.

It is an amenable number.

20122311029 is a deficient number, since it is larger than the sum of its proper divisors (195362347).

20122311029 is a wasteful number, since it uses less digits than its factorization.

20122311029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195362346.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 20122311029 in words is "twenty billion, one hundred twenty-two million, three hundred eleven thousand, twenty-nine".