121100100997 has 2 divisors, whose sum is σ = 121100100998. Its totient is φ = 121100100996.

The previous prime is 121100100941. The next prime is 121100101019. The reversal of 121100100997 is 799001001121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97293462561 + 23806638436 = 311919^2 + 154294^2 .

It is an emirp because it is prime and its reverse (799001001121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121100100997 - 2¹⁹ = 121099576709 is a prime.

It is a super-2 number, since 2×121100100997² (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 (121100100397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550050498 + 60550050499.

It is an arithmetic number, because the mean of its divisors is an integer number (60550050499).

Almost surely, 2^121100100997 is an apocalyptic number.

It is an amenable number.

121100100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100100997 is an equidigital number, since it uses as much as digits as its factorization.

121100100997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 31.

The spelling of 121100100997 in words is "one hundred twenty-one billion, one hundred million, one hundred thousand, nine hundred ninety-seven".