221211200402 has 16 divisors (see below), whose sum is σ = 355871050560. Its totient is φ = 102807190512.

The previous prime is 221211200341. The next prime is 221211200411. The reversal of 221211200402 is 204002112122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54916358 + ... + 54920385.

It is an arithmetic number, because the mean of its divisors is an integer number (22241940660).

Almost surely, 2^221211200402 is an apocalyptic number.

221211200402 is a deficient number, since it is larger than the sum of its proper divisors (134659850158).

221211200402 is a wasteful number, since it uses less digits than its factorization.

221211200402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109836817.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221211200402 its reverse (204002112122), we get a palindrome (425213312524).

The spelling of 221211200402 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred thousand, four hundred two".