121414322011621 has 2 divisors, whose sum is σ = 121414322011622. Its totient is φ = 121414322011620.

The previous prime is 121414322011573. The next prime is 121414322011657. The reversal of 121414322011621 is 126110223414121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116217239768100 + 5197082243521 = 10780410^2 + 2279711^2 .

It is an emirp because it is prime and its reverse (126110223414121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121414322011621 - 2¹⁵ = 121414321978853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121414322011691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60707161005810 + 60707161005811.

It is an arithmetic number, because the mean of its divisors is an integer number (60707161005811).

Almost surely, 2^{121414322011621} is an apocalyptic number.

It is an amenable number.

121414322011621 is a deficient number, since it is larger than the sum of its proper divisors (1).

121414322011621 is an equidigital number, since it uses as much as digits as its factorization.

121414322011621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

Adding to 121414322011621 its reverse (126110223414121), we get a palindrome (247524545425742).

The spelling of 121414322011621 in words is "one hundred twenty-one trillion, four hundred fourteen billion, three hundred twenty-two million, eleven thousand, six hundred twenty-one".