1011202121023 has 2 divisors, whose sum is σ = 1011202121024. Its totient is φ = 1011202121022.

The previous prime is 1011202121021. The next prime is 1011202121051. The reversal of 1011202121023 is 3201212021101.

It is a weak prime.

It is an emirp because it is prime and its reverse (3201212021101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011202121023 - 2¹ = 1011202121021 is a prime.

It is a super-2 number, since 2×1011202121023² (a number of 25 digits) contains 22 as substring.

Together with 1011202121021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1011202120988 and 1011202121006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011202121021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505601060511 + 505601060512.

It is an arithmetic number, because the mean of its divisors is an integer number (505601060512).

Almost surely, 2^{1011202121023} is an apocalyptic number.

1011202121023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011202121023 is an equidigital number, since it uses as much as digits as its factorization.

1011202121023 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 16.

Adding to 1011202121023 its reverse (3201212021101), we get a palindrome (4212414142124).

The spelling of 1011202121023 in words is "one trillion, eleven billion, two hundred two million, one hundred twenty-one thousand, twenty-three".