2111032313021 has 2 divisors, whose sum is σ = 2111032313022. Its totient is φ = 2111032313020.

The previous prime is 2111032312993. The next prime is 2111032313101. The reversal of 2111032313021 is 1203132301112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1561847568121 + 549184744900 = 1249739^2 + 741070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111032313021 is a prime.

It is a super-2 number, since 2×2111032313021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111032312984 and 2111032313002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111032313521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055516156510 + 1055516156511.

It is an arithmetic number, because the mean of its divisors is an integer number (1055516156511).

Almost surely, 2^{2111032313021} is an apocalyptic number.

It is an amenable number.

2111032313021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111032313021 is an equidigital number, since it uses as much as digits as its factorization.

2111032313021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2111032313021 its reverse (1203132301112), we get a palindrome (3314164614133).

The spelling of 2111032313021 in words is "two trillion, one hundred eleven billion, thirty-two million, three hundred thirteen thousand, twenty-one".