10120021003 has 2 divisors, whose sum is σ = 10120021004. Its totient is φ = 10120021002.

The previous prime is 10120020991. The next prime is 10120021013. The reversal of 10120021003 is 30012002101.

It is an a-pointer prime, because the next prime (10120021013) can be obtained adding 10120021003 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10120021003 - 2²⁹ = 9583150091 is a prime.

It is a super-2 number, since 2×10120021003² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10120021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060010501 + 5060010502.

It is an arithmetic number, because the mean of its divisors is an integer number (5060010502).

Almost surely, 2^10120021003 is an apocalyptic number.

10120021003 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120021003 is an equidigital number, since it uses as much as digits as its factorization.

10120021003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10120021003 its reverse (30012002101), we get a palindrome (40132023104).

The spelling of 10120021003 in words is "ten billion, one hundred twenty million, twenty-one thousand, three".