221241122031 has 4 divisors (see below), whose sum is σ = 294988162712. Its totient is φ = 147494081352.

The previous prime is 221241121919. The next prime is 221241122051. The reversal of 221241122031 is 130221142122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 221241122031 - 2²⁶ = 221174013167 is a prime.

It is a super-2 number, since 2×221241122031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221241121989 and 221241122007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221241122051) 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, 36873520336 + ... + 36873520341.

It is an arithmetic number, because the mean of its divisors is an integer number (73747040678).

Almost surely, 2^221241122031 is an apocalyptic number.

221241122031 is a deficient number, since it is larger than the sum of its proper divisors (73747040681).

221241122031 is an equidigital number, since it uses as much as digits as its factorization.

221241122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73747040680.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 221241122031 its reverse (130221142122), we get a palindrome (351462264153).

The spelling of 221241122031 in words is "two hundred twenty-one billion, two hundred forty-one million, one hundred twenty-two thousand, thirty-one".