2215601421 has 32 divisors (see below), whose sum is σ = 3346513920. Its totient is φ = 1291550400.

The previous prime is 2215601413. The next prime is 2215601467. The reversal of 2215601421 is 1241065122.

It is not a de Polignac number, because 2215601421 - 2³ = 2215601413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2215601391 and 2215601400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215601411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255076 + ... + 263618.

It is an arithmetic number, because the mean of its divisors is an integer number (104578560).

Almost surely, 2^2215601421 is an apocalyptic number.

It is an amenable number.

2215601421 is a deficient number, since it is larger than the sum of its proper divisors (1130912499).

2215601421 is a wasteful number, since it uses less digits than its factorization.

2215601421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8857.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2215601421 is about 47070.1754936180. The cubic root of 2215601421 is about 1303.6586131699.

Adding to 2215601421 its reverse (1241065122), we get a palindrome (3456666543).

The spelling of 2215601421 in words is "two billion, two hundred fifteen million, six hundred one thousand, four hundred twenty-one".