121231331123 has 8 divisors (see below), whose sum is σ = 139821195360. Its totient is φ = 102959242560.

The previous prime is 121231331113. The next prime is 121231331173. The reversal of 121231331123 is 321133132121.

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 121231331123 - 2⁶ = 121231331059 is a prime.

It is a super-2 number, since 2×121231331123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121231331113) 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, 79443098 + ... + 79444623.

It is an arithmetic number, because the mean of its divisors is an integer number (17477649420).

Almost surely, 2^121231331123 is an apocalyptic number.

121231331123 is a deficient number, since it is larger than the sum of its proper divisors (18589864237).

121231331123 is a wasteful number, since it uses less digits than its factorization.

121231331123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158887837.

The product of its digits is 648, while the sum is 23.

Adding to 121231331123 its reverse (321133132121), we get a palindrome (442364463244).

The spelling of 121231331123 in words is "one hundred twenty-one billion, two hundred thirty-one million, three hundred thirty-one thousand, one hundred twenty-three".