1020202221101 has 4 divisors (see below), whose sum is σ = 1165945395552. Its totient is φ = 874459046652.

The previous prime is 1020202221053. The next prime is 1020202221109. The reversal of 1020202221101 is 1011222020201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020202221101 - 2²² = 1020198026797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020202221109) 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, 72871587215 + ... + 72871587228.

It is an arithmetic number, because the mean of its divisors is an integer number (291486348888).

Almost surely, 2^{1020202221101} is an apocalyptic number.

It is an amenable number.

1020202221101 is a deficient number, since it is larger than the sum of its proper divisors (145743174451).

1020202221101 is an equidigital number, since it uses as much as digits as its factorization.

1020202221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145743174450.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1020202221101 its reverse (1011222020201), we get a palindrome (2031424241302).

The spelling of 1020202221101 in words is "one trillion, twenty billion, two hundred two million, two hundred twenty-one thousand, one hundred one".