2211112012021 has 4 divisors (see below), whose sum is σ = 2412122194944. Its totient is φ = 2010101829100.

The previous prime is 2211112012013. The next prime is 2211112012097. The reversal of 2211112012021 is 1202102111122.

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 2211112012021 - 2³ = 2211112012013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211112011986 and 2211112012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211112012121) 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, 100505091445 + ... + 100505091466.

It is an arithmetic number, because the mean of its divisors is an integer number (603030548736).

Almost surely, 2^{2211112012021} is an apocalyptic number.

It is an amenable number.

2211112012021 is a deficient number, since it is larger than the sum of its proper divisors (201010182923).

2211112012021 is a wasteful number, since it uses less digits than its factorization.

2211112012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201010182922.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2211112012021 its reverse (1202102111122), we get a palindrome (3413214123143).

The spelling of 2211112012021 in words is "two trillion, two hundred eleven billion, one hundred twelve million, twelve thousand, twenty-one".