2142221401 has 4 divisors (see below), whose sum is σ = 2143897600. Its totient is φ = 2140545204.

The previous prime is 2142221371. The next prime is 2142221467. The reversal of 2142221401 is 1041222412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2142221401 - 2⁵ = 2142221369 is a prime.

It is a super-2 number, since 2×2142221401² = 9178225061804805602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142224401) 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, 836181 + ... + 838738.

It is an arithmetic number, because the mean of its divisors is an integer number (535974400).

Almost surely, 2^2142221401 is an apocalyptic number.

It is an amenable number.

2142221401 is a deficient number, since it is larger than the sum of its proper divisors (1676199).

2142221401 is a wasteful number, since it uses less digits than its factorization.

2142221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676198.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2142221401 is about 46284.1376823637. The cubic root of 2142221401 is about 1289.1044805304.

Adding to 2142221401 its reverse (1041222412), we get a palindrome (3183443813).

The spelling of 2142221401 in words is "two billion, one hundred forty-two million, two hundred twenty-one thousand, four hundred one".