221234101401 has 16 divisors (see below), whose sum is σ = 296390715840. Its totient is φ = 146785013760.

The previous prime is 221234101397. The next prime is 221234101409. The reversal of 221234101401 is 104101432122.

It is not a de Polignac number, because 221234101401 - 2² = 221234101397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221234101409) 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, 369241 + ... + 760793.

It is an arithmetic number, because the mean of its divisors is an integer number (18524419740).

Almost surely, 2^221234101401 is an apocalyptic number.

It is an amenable number.

221234101401 is a deficient number, since it is larger than the sum of its proper divisors (75156614439).

221234101401 is a wasteful number, since it uses less digits than its factorization.

221234101401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392456.

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

Adding to 221234101401 its reverse (104101432122), we get a palindrome (325335533523).

The spelling of 221234101401 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred one thousand, four hundred one".