22020101231 has 4 divisors (see below), whose sum is σ = 22036140552. Its totient is φ = 22004061912.

The previous prime is 22020101221. The next prime is 22020101239. The reversal of 22020101231 is 13210102022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22020101231 - 2¹⁸ = 22019839087 is a prime.

It is a super-2 number, since 2×22020101231² (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 (22020101239) 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, 8017601 + ... + 8020346.

It is an arithmetic number, because the mean of its divisors is an integer number (5509035138).

Almost surely, 2^22020101231 is an apocalyptic number.

22020101231 is a deficient number, since it is larger than the sum of its proper divisors (16039321).

22020101231 is a wasteful number, since it uses less digits than its factorization.

22020101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16039320.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22020101231 its reverse (13210102022), we get a palindrome (35230203253).

The spelling of 22020101231 in words is "twenty-two billion, twenty million, one hundred one thousand, two hundred thirty-one".