1022211231 has 4 divisors (see below), whose sum is σ = 1362948312. Its totient is φ = 681474152.

The previous prime is 1022211217. The next prime is 1022211259. The reversal of 1022211231 is 1321122201.

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 1022211231 - 2¹⁵ = 1022178463 is a prime.

It is a super-2 number, since 2×1022211231² = 2089831601565070722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022211231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022211331) 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, 170368536 + ... + 170368541.

It is an arithmetic number, because the mean of its divisors is an integer number (340737078).

Almost surely, 2^1022211231 is an apocalyptic number.

1022211231 is a deficient number, since it is larger than the sum of its proper divisors (340737081).

1022211231 is an equidigital number, since it uses as much as digits as its factorization.

1022211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340737080.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1022211231 is about 31972.0382678365. The cubic root of 1022211231 is about 1007.3495947899.

Adding to 1022211231 its reverse (1321122201), we get a palindrome (2343333432).

The spelling of 1022211231 in words is "one billion, twenty-two million, two hundred eleven thousand, two hundred thirty-one".