1101000202021 has 2 divisors, whose sum is σ = 1101000202022. Its totient is φ = 1101000202020.

The previous prime is 1101000202009. The next prime is 1101000202063. The reversal of 1101000202021 is 1202020001011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1090572933025 + 10427268996 = 1044305^2 + 102114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101000202021 - 2⁵ = 1101000201989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101000201989 and 1101000202007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101000202091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550500101010 + 550500101011.

It is an arithmetic number, because the mean of its divisors is an integer number (550500101011).

Almost surely, 2^{1101000202021} is an apocalyptic number.

It is an amenable number.

1101000202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101000202021 is an equidigital number, since it uses as much as digits as its factorization.

1101000202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1101000202021 its reverse (1202020001011), we get a palindrome (2303020203032).

The spelling of 1101000202021 in words is "one trillion, one hundred one billion, two hundred two thousand, twenty-one".