2312201020021 has 2 divisors, whose sum is σ = 2312201020022. Its totient is φ = 2312201020020.

The previous prime is 2312201019941. The next prime is 2312201020027. The reversal of 2312201020021 is 1200201022132.

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., 2141393222500 + 170807797521 = 1463350^2 + 413289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312201020021 - 2⁷ = 2312201019893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2312201019977 and 2312201020004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2312201020027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156100510010 + 1156100510011.

It is an arithmetic number, because the mean of its divisors is an integer number (1156100510011).

Almost surely, 2^{2312201020021} is an apocalyptic number.

It is an amenable number.

2312201020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312201020021 is an equidigital number, since it uses as much as digits as its factorization.

2312201020021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2312201020021 its reverse (1200201022132), we get a palindrome (3512402042153).

The spelling of 2312201020021 in words is "two trillion, three hundred twelve billion, two hundred one million, twenty thousand, twenty-one".