1202002021123 has 2 divisors, whose sum is σ = 1202002021124. Its totient is φ = 1202002021122.

The previous prime is 1202002021079. The next prime is 1202002021133. The reversal of 1202002021123 is 3211202002021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1202002021123 - 2¹⁷ = 1202001890051 is a prime.

It is a super-2 number, since 2×1202002021123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202002021097 and 1202002021106.

It is not a weakly prime, because it can be changed into another prime (1202002021133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601001010561 + 601001010562.

It is an arithmetic number, because the mean of its divisors is an integer number (601001010562).

Almost surely, 2^{1202002021123} is an apocalyptic number.

1202002021123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202002021123 is an equidigital number, since it uses as much as digits as its factorization.

1202002021123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1202002021123 its reverse (3211202002021), we get a palindrome (4413204023144).

The spelling of 1202002021123 in words is "one trillion, two hundred two billion, two million, twenty-one thousand, one hundred twenty-three".