102211401 has 16 divisors (see below), whose sum is σ = 142248960. Its totient is φ = 65220480.

The previous prime is 102211397. The next prime is 102211409. The reversal of 102211401 is 104112201.

It is a happy number.

It is not a de Polignac number, because 102211401 - 2² = 102211397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102211409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1321 + ... + 14358.

It is an arithmetic number, because the mean of its divisors is an integer number (8890560).

Almost surely, 2^102211401 is an apocalyptic number.

It is an amenable number.

102211401 is a deficient number, since it is larger than the sum of its proper divisors (40037559).

102211401 is a wasteful number, since it uses less digits than its factorization.

102211401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15776.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 102211401 is about 10109.9654302080. The cubic root of 102211401 is about 467.5554392965. Note that the first 3 decimals are identical.

Adding to 102211401 its reverse (104112201), we get a palindrome (206323602).

The spelling of 102211401 in words is "one hundred two million, two hundred eleven thousand, four hundred one".