121000211122621 has 2 divisors, whose sum is σ = 121000211122622. Its totient is φ = 121000211122620.

The previous prime is 121000211122493. The next prime is 121000211122639. The reversal of 121000211122621 is 126221112000121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120265657564900 + 734553557721 = 10966570^2 + 857061^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000211122621 - 2⁷ = 121000211122493 is a prime.

It is a super-2 number, since 2×121000211122621² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121000211122592 and 121000211122601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000211125621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500105561310 + 60500105561311.

It is an arithmetic number, because the mean of its divisors is an integer number (60500105561311).

Almost surely, 2^{121000211122621} is an apocalyptic number.

It is an amenable number.

121000211122621 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000211122621 is an equidigital number, since it uses as much as digits as its factorization.

121000211122621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 121000211122621 its reverse (126221112000121), we get a palindrome (247221323122742).

The spelling of 121000211122621 in words is "one hundred twenty-one trillion, two hundred eleven million, one hundred twenty-two thousand, six hundred twenty-one".