2221054121 has 8 divisors (see below), whose sum is σ = 2609350464. Its totient is φ = 1863821520.

The previous prime is 2221054109. The next prime is 2221054139. The reversal of 2221054121 is 1214501222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221054121 - 2⁶ = 2221054057 is a prime.

It is a super-2 number, since 2×2221054121² = 9866162816822165282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221054093 and 2221054102.

It is not an unprimeable number, because it can be changed into a prime (2221054181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7765781 + ... + 7766066.

It is an arithmetic number, because the mean of its divisors is an integer number (326168808).

Almost surely, 2^2221054121 is an apocalyptic number.

It is an amenable number.

2221054121 is a deficient number, since it is larger than the sum of its proper divisors (388296343).

2221054121 is a wasteful number, since it uses less digits than its factorization.

2221054121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15531871.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2221054121 is about 47128.0608661125. The cubic root of 2221054121 is about 1304.7271922315.

Adding to 2221054121 its reverse (1214501222), we get a palindrome (3435555343).

The spelling of 2221054121 in words is "two billion, two hundred twenty-one million, fifty-four thousand, one hundred twenty-one".