121203028031 has 2 divisors, whose sum is σ = 121203028032. Its totient is φ = 121203028030.

The previous prime is 121203028021. The next prime is 121203028039. The reversal of 121203028031 is 130820302121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121203028031 is a prime.

It is a super-2 number, since 2×121203028031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121203027988 and 121203028006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121203028039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601514015 + 60601514016.

It is an arithmetic number, because the mean of its divisors is an integer number (60601514016).

Almost surely, 2^121203028031 is an apocalyptic number.

121203028031 is a deficient number, since it is larger than the sum of its proper divisors (1).

121203028031 is an equidigital number, since it uses as much as digits as its factorization.

121203028031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 121203028031 in words is "one hundred twenty-one billion, two hundred three million, twenty-eight thousand, thirty-one".