1022121231 has 8 divisors (see below), whose sum is σ = 1375331760. Its totient is φ = 675162432.

The previous prime is 1022121203. The next prime is 1022121239. The reversal of 1022121231 is 1321212201.

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

It is not a de Polignac number, because 1022121231 - 2⁶ = 1022121167 is a prime.

It is a super-2 number, since 2×1022121231² = 2089463621721910722, 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 1022121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1562550 + ... + 1563203.

It is an arithmetic number, because the mean of its divisors is an integer number (171916470).

Almost surely, 2^1022121231 is an apocalyptic number.

1022121231 is a deficient number, since it is larger than the sum of its proper divisors (353210529).

1022121231 is a wasteful number, since it uses less digits than its factorization.

1022121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125865.

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

The square root of 1022121231 is about 31970.6307569932. The cubic root of 1022121231 is about 1007.3200300836.

Adding to 1022121231 its reverse (1321212201), we get a palindrome (2343333432).

The spelling of 1022121231 in words is "one billion, twenty-two million, one hundred twenty-one thousand, two hundred thirty-one".