2211020221012 has 12 divisors (see below), whose sum is σ = 3869433044820. Its totient is φ = 1105467922496.

The previous prime is 2211020220989. The next prime is 2211020221019. The reversal of 2211020221012 is 2101220201122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 216332893456 + 1994687327556 = 465116^2 + 1412334^2 .

It is a super-2 number, since 2×2211020221012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211020221019) 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, 10428937 + ... + 10638832.

It is an arithmetic number, because the mean of its divisors is an integer number (322452753735).

Almost surely, 2^{2211020221012} is an apocalyptic number.

It is an amenable number.

2211020221012 is a deficient number, since it is larger than the sum of its proper divisors (1658412823808).

2211020221012 is a wasteful number, since it uses less digits than its factorization.

2211020221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21094010 (or 21094008 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211020221012 its reverse (2101220201122), we get a palindrome (4312240422134).

The spelling of 2211020221012 in words is "two trillion, two hundred eleven billion, twenty million, two hundred twenty-one thousand, twelve".