121123302131 has 16 divisors (see below), whose sum is σ = 132019282080. Its totient is φ = 110455023360.

The previous prime is 121123302127. The next prime is 121123302143. The reversal of 121123302131 is 131203321121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121123302131 - 2² = 121123302127 is a prime.

It is a super-2 number, since 2×121123302131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121123302161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322096 + ... + 1410738.

It is an arithmetic number, because the mean of its divisors is an integer number (8251205130).

Almost surely, 2^121123302131 is an apocalyptic number.

121123302131 is a deficient number, since it is larger than the sum of its proper divisors (10895979949).

121123302131 is a wasteful number, since it uses less digits than its factorization.

121123302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89926.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121123302131 its reverse (131203321121), we get a palindrome (252326623252).

The spelling of 121123302131 in words is "one hundred twenty-one billion, one hundred twenty-three million, three hundred two thousand, one hundred thirty-one".