20022021231 has 8 divisors (see below), whose sum is σ = 26731578624. Its totient is φ = 13330239000.

The previous prime is 20022021211. The next prime is 20022021241. The reversal of 20022021231 is 13212022002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20022021231 - 2¹¹ = 20022019183 is a prime.

It is a super-2 number, since 2×20022021231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20022021231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022021211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4441161 + ... + 4445666.

It is an arithmetic number, because the mean of its divisors is an integer number (3341447328).

Almost surely, 2^20022021231 is an apocalyptic number.

20022021231 is a deficient number, since it is larger than the sum of its proper divisors (6709557393).

20022021231 is an equidigital number, since it uses as much as digits as its factorization.

20022021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8887581.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20022021231 its reverse (13212022002), we get a palindrome (33234043233).

The spelling of 20022021231 in words is "twenty billion, twenty-two million, twenty-one thousand, two hundred thirty-one".