121211020019963 has 2 divisors, whose sum is σ = 121211020019964. Its totient is φ = 121211020019962.

The previous prime is 121211020019951. The next prime is 121211020020037. The reversal of 121211020019963 is 369910020112121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121211020019963 - 2²⁰ = 121211018971387 is a prime.

It is a super-2 number, since 2×121211020019963² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121211040019963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605510009981 + 60605510009982.

It is an arithmetic number, because the mean of its divisors is an integer number (60605510009982).

Almost surely, 2^{121211020019963} is an apocalyptic number.

121211020019963 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211020019963 is an equidigital number, since it uses as much as digits as its factorization.

121211020019963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 121211020019963 in words is "one hundred twenty-one trillion, two hundred eleven billion, twenty million, nineteen thousand, nine hundred sixty-three".