2211020021021 has 4 divisors (see below), whose sum is σ = 2526880024032. Its totient is φ = 1895160018012.

The previous prime is 2211020021009. The next prime is 2211020021081. The reversal of 2211020021021 is 1201200201122.

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 2211020021021 - 2³⁴ = 2193840151837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211020020987 and 2211020021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211020021081) 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, 157930001495 + ... + 157930001508.

It is an arithmetic number, because the mean of its divisors is an integer number (631720006008).

Almost surely, 2^{2211020021021} is an apocalyptic number.

It is an amenable number.

2211020021021 is a deficient number, since it is larger than the sum of its proper divisors (315860003011).

2211020021021 is an equidigital number, since it uses as much as digits as its factorization.

2211020021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315860003010.

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

Adding to 2211020021021 its reverse (1201200201122), we get a palindrome (3412220222143).

The spelling of 2211020021021 in words is "two trillion, two hundred eleven billion, twenty million, twenty-one thousand, twenty-one".