121211194031 has 2 divisors, whose sum is σ = 121211194032. Its totient is φ = 121211194030.

The previous prime is 121211194019. The next prime is 121211194037. The reversal of 121211194031 is 130491112121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121211194031 - 2⁶ = 121211193967 is a prime.

It is a super-2 number, since 2×121211194031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211194037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605597015 + 60605597016.

It is an arithmetic number, because the mean of its divisors is an integer number (60605597016).

Almost surely, 2^121211194031 is an apocalyptic number.

121211194031 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211194031 is an equidigital number, since it uses as much as digits as its factorization.

121211194031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 121211194031 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred ninety-four thousand, thirty-one".