2021402412049 has 2 divisors, whose sum is σ = 2021402412050. Its totient is φ = 2021402412048.

The previous prime is 2021402411981. The next prime is 2021402412067. The reversal of 2021402412049 is 9402142041202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001073355649 + 20329056400 = 1414593^2 + 142580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021402412049 - 2⁷ = 2021402411921 is a prime.

It is a super-2 number, since 2×2021402412049² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021402412049.

It is not a weakly prime, because it can be changed into another prime (2021402416049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010701206024 + 1010701206025.

It is an arithmetic number, because the mean of its divisors is an integer number (1010701206025).

Almost surely, 2^{2021402412049} is an apocalyptic number.

It is an amenable number.

2021402412049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021402412049 is an equidigital number, since it uses as much as digits as its factorization.

2021402412049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The spelling of 2021402412049 in words is "two trillion, twenty-one billion, four hundred two million, four hundred twelve thousand, forty-nine".