1131222023221 has 8 divisors (see below), whose sum is σ = 1180480150080. Its totient is φ = 1081970109792.

The previous prime is 1131222023213. The next prime is 1131222023251. The reversal of 1131222023221 is 1223202221311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131222023221 - 2³ = 1131222023213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131222023192 and 1131222023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131222023251) 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, 1179391 + ... + 1911388.

It is an arithmetic number, because the mean of its divisors is an integer number (147560018760).

Almost surely, 2^{1131222023221} is an apocalyptic number.

It is an amenable number.

1131222023221 is a deficient number, since it is larger than the sum of its proper divisors (49258126859).

1131222023221 is a wasteful number, since it uses less digits than its factorization.

1131222023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106715.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1131222023221 its reverse (1223202221311), we get a palindrome (2354424244532).

The spelling of 1131222023221 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, twenty-three thousand, two hundred twenty-one".