2000001221123 has 2 divisors, whose sum is σ = 2000001221124. Its totient is φ = 2000001221122.

The previous prime is 2000001221111. The next prime is 2000001221131. The reversal of 2000001221123 is 3211221000002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2000001221123 - 2¹⁸ = 2000000958979 is a prime.

It is a super-2 number, since 2×2000001221123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2000001221098 and 2000001221107.

It is not a weakly prime, because it can be changed into another prime (2000001227123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000000610561 + 1000000610562.

It is an arithmetic number, because the mean of its divisors is an integer number (1000000610562).

Almost surely, 2^{2000001221123} is an apocalyptic number.

2000001221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000001221123 is an equidigital number, since it uses as much as digits as its factorization.

2000001221123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2000001221123 its reverse (3211221000002), we get a palindrome (5211222221125).

The spelling of 2000001221123 in words is "two trillion, one million, two hundred twenty-one thousand, one hundred twenty-three".