2221340021121 has 16 divisors (see below), whose sum is σ = 3194327876544. Its totient is φ = 1364959287744.

The previous prime is 2221340021107. The next prime is 2221340021143. The reversal of 2221340021121 is 1211200431222.

It is a happy number.

It is not a de Polignac number, because 2221340021121 - 2¹⁹ = 2221339496833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221340021171) 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, 42039651 + ... + 42092456.

It is an arithmetic number, because the mean of its divisors is an integer number (199645492284).

Almost surely, 2^{2221340021121} is an apocalyptic number.

It is an amenable number.

2221340021121 is a deficient number, since it is larger than the sum of its proper divisors (972987855423).

2221340021121 is a wasteful number, since it uses less digits than its factorization.

2221340021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84132800.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2221340021121 its reverse (1211200431222), we get a palindrome (3432540452343).

The spelling of 2221340021121 in words is "two trillion, two hundred twenty-one billion, three hundred forty million, twenty-one thousand, one hundred twenty-one".