2110001212021 has 2 divisors, whose sum is σ = 2110001212022. Its totient is φ = 2110001212020.

The previous prime is 2110001211977. The next prime is 2110001212091. The reversal of 2110001212021 is 1202121000112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1594600700625 + 515400511396 = 1262775^2 + 717914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110001212021 - 2²¹ = 2109999114869 is a prime.

It is a super-2 number, since 2×2110001212021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2110001211992 and 2110001212010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110001212091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055000606010 + 1055000606011.

It is an arithmetic number, because the mean of its divisors is an integer number (1055000606011).

Almost surely, 2^{2110001212021} is an apocalyptic number.

It is an amenable number.

2110001212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110001212021 is an equidigital number, since it uses as much as digits as its factorization.

2110001212021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2110001212021 its reverse (1202121000112), we get a palindrome (3312122212133).

The spelling of 2110001212021 in words is "two trillion, one hundred ten billion, one million, two hundred twelve thousand, twenty-one".