121201109983 has 2 divisors, whose sum is σ = 121201109984. Its totient is φ = 121201109982.

The previous prime is 121201109947. The next prime is 121201109989. The reversal of 121201109983 is 389901102121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201109983 is a prime.

It is a super-2 number, since 2×121201109983² (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 (121201109989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600554991 + 60600554992.

It is an arithmetic number, because the mean of its divisors is an integer number (60600554992).

Almost surely, 2^121201109983 is an apocalyptic number.

121201109983 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201109983 is an equidigital number, since it uses as much as digits as its factorization.

121201109983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 37.

The spelling of 121201109983 in words is "one hundred twenty-one billion, two hundred one million, one hundred nine thousand, nine hundred eighty-three".