2221022211121 has 16 divisors (see below), whose sum is σ = 2553291356544. Its totient is φ = 1892500786944.

The previous prime is 2221022211053. The next prime is 2221022211179. The reversal of 2221022211121 is 1211122201222.

It is a cyclic number.

It is not a de Polignac number, because 2221022211121 - 2¹¹ = 2221022209073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221022211721) 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, 10341001 + ... + 10553593.

It is an arithmetic number, because the mean of its divisors is an integer number (159580709784).

Almost surely, 2^{2221022211121} is an apocalyptic number.

It is an amenable number.

2221022211121 is a deficient number, since it is larger than the sum of its proper divisors (332269145423).

2221022211121 is a wasteful number, since it uses less digits than its factorization.

2221022211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221400.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221022211121 its reverse (1211122201222), we get a palindrome (3432144412343).

The spelling of 2221022211121 in words is "two trillion, two hundred twenty-one billion, twenty-two million, two hundred eleven thousand, one hundred twenty-one".