2121099103 has 2 divisors, whose sum is σ = 2121099104. Its totient is φ = 2121099102.

The previous prime is 2121099053. The next prime is 2121099131. The reversal of 2121099103 is 3019901212.

It is an a-pointer prime, because the next prime (2121099131) can be obtained adding 2121099103 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121099103 - 2⁹ = 2121098591 is a prime.

It is a super-2 number, since 2×2121099103² = 8998122809494809218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121099173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060549551 + 1060549552.

It is an arithmetic number, because the mean of its divisors is an integer number (1060549552).

Almost surely, 2^2121099103 is an apocalyptic number.

2121099103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121099103 is an equidigital number, since it uses as much as digits as its factorization.

2121099103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 2121099103 is about 46055.3916821907. The cubic root of 2121099103 is about 1284.8536228971.

The spelling of 2121099103 in words is "two billion, one hundred twenty-one million, ninety-nine thousand, one hundred three".