221211214023 has 16 divisors (see below), whose sum is σ = 300531085920. Its totient is φ = 144683071104.

The previous prime is 221211214009. The next prime is 221211214027. The reversal of 221211214023 is 320412112122.

It is a happy number.

It is not a de Polignac number, because 221211214023 - 2²¹ = 221209116871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211214027) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3769873 + ... + 3828101.

It is an arithmetic number, because the mean of its divisors is an integer number (18783192870).

Almost surely, 2^221211214023 is an apocalyptic number.

221211214023 is a deficient number, since it is larger than the sum of its proper divisors (79319871897).

221211214023 is a wasteful number, since it uses less digits than its factorization.

221211214023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82178.

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

Adding to 221211214023 its reverse (320412112122), we get a palindrome (541623326145).

The spelling of 221211214023 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred fourteen thousand, twenty-three".