2111122010221 has 16 divisors (see below), whose sum is σ = 2451189646080. Its totient is φ = 1780888636800.

The previous prime is 2111122010171. The next prime is 2111122010243. The reversal of 2111122010221 is 1220102211112.

It is not a de Polignac number, because 2111122010221 - 2¹³ = 2111122002029 is a prime.

It is a super-2 number, since 2×2111122010221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111122010195 and 2111122010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111122010321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8822136 + ... + 9058273.

It is an arithmetic number, because the mean of its divisors is an integer number (153199352880).

Almost surely, 2^{2111122010221} is an apocalyptic number.

It is an amenable number.

2111122010221 is a deficient number, since it is larger than the sum of its proper divisors (340067635859).

2111122010221 is a wasteful number, since it uses less digits than its factorization.

2111122010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17880684.

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

Adding to 2111122010221 its reverse (1220102211112), we get a palindrome (3331224221333).

The spelling of 2111122010221 in words is "two trillion, one hundred eleven billion, one hundred twenty-two million, ten thousand, two hundred twenty-one".