2120221103831 has 2 divisors, whose sum is σ = 2120221103832. Its totient is φ = 2120221103830.

The previous prime is 2120221103827. The next prime is 2120221103879. The reversal of 2120221103831 is 1383011220212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120221103831 - 2² = 2120221103827 is a prime.

It is a super-2 number, since 2×2120221103831² (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 2120221103831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120221103801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060110551915 + 1060110551916.

It is an arithmetic number, because the mean of its divisors is an integer number (1060110551916).

Almost surely, 2^{2120221103831} is an apocalyptic number.

2120221103831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120221103831 is an equidigital number, since it uses as much as digits as its factorization.

2120221103831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 2120221103831 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred three thousand, eight hundred thirty-one".