222132021021 has 6 divisors (see below), whose sum is σ = 320857363710. Its totient is φ = 148088014008.

The previous prime is 222132020993. The next prime is 222132021047. The reversal of 222132021021 is 120120231222.

It can be written as a sum of positive squares in only one way, i.e., 214796098521 + 7335922500 = 463461^2 + 85650^2 .

It is not a de Polignac number, because 222132021021 - 2¹⁴ = 222132004637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222132020985 and 222132021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222132021091) 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, 12340667826 + ... + 12340667843.

It is an arithmetic number, because the mean of its divisors is an integer number (53476227285).

Almost surely, 2^222132021021 is an apocalyptic number.

It is an amenable number.

222132021021 is a deficient number, since it is larger than the sum of its proper divisors (98725342689).

222132021021 is a wasteful number, since it uses less digits than its factorization.

222132021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24681335675 (or 24681335672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222132021021 its reverse (120120231222), we get a palindrome (342252252243).

The spelling of 222132021021 in words is "two hundred twenty-two billion, one hundred thirty-two million, twenty-one thousand, twenty-one".