2121020023301 has 2 divisors, whose sum is σ = 2121020023302. Its totient is φ = 2121020023300.

The previous prime is 2121020023273. The next prime is 2121020023321. The reversal of 2121020023301 is 1033200201212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1838342781025 + 282677242276 = 1355855^2 + 531674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121020023301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121020023301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121020023321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060510011650 + 1060510011651.

It is an arithmetic number, because the mean of its divisors is an integer number (1060510011651).

Almost surely, 2^{2121020023301} is an apocalyptic number.

It is an amenable number.

2121020023301 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121020023301 is an equidigital number, since it uses as much as digits as its factorization.

2121020023301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2121020023301 its reverse (1033200201212), we get a palindrome (3154220224513).

The spelling of 2121020023301 in words is "two trillion, one hundred twenty-one billion, twenty million, twenty-three thousand, three hundred one".