121023211231 has 8 divisors (see below), whose sum is σ = 130695737760. Its totient is φ = 111402548832.

The previous prime is 121023211229. The next prime is 121023211277. The reversal of 121023211231 is 132112320121.

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 121023211231 - 2¹ = 121023211229 is a prime.

It is a super-2 number, since 2×121023211231² (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 = 121023211199 and 121023211208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023211201) 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, 12961180 + ... + 12970513.

It is an arithmetic number, because the mean of its divisors is an integer number (16336967220).

Almost surely, 2^121023211231 is an apocalyptic number.

121023211231 is a deficient number, since it is larger than the sum of its proper divisors (9672526529).

121023211231 is a wasteful number, since it uses less digits than its factorization.

121023211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25932065.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121023211231 its reverse (132112320121), we get a palindrome (253135531352).

The spelling of 121023211231 in words is "one hundred twenty-one billion, twenty-three million, two hundred eleven thousand, two hundred thirty-one".