20210122003 has 4 divisors (see below), whose sum is σ = 20211305328. Its totient is φ = 20208938680.

The previous prime is 20210122001. The next prime is 20210122033. The reversal of 20210122003 is 30022101202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30022101202 = 2 ⋅15011050601.

It is a cyclic number.

It is not a de Polignac number, because 20210122003 - 2¹ = 20210122001 is a prime.

It is a super-2 number, since 2×20210122003² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210122001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565663 + ... + 600328.

It is an arithmetic number, because the mean of its divisors is an integer number (5052826332).

Almost surely, 2^20210122003 is an apocalyptic number.

20210122003 is a deficient number, since it is larger than the sum of its proper divisors (1183325).

20210122003 is a wasteful number, since it uses less digits than its factorization.

20210122003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183324.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20210122003 its reverse (30022101202), we get a palindrome (50232223205).

The spelling of 20210122003 in words is "twenty billion, two hundred ten million, one hundred twenty-two thousand, three".