21101301222 has 16 divisors (see below), whose sum is σ = 42246897840. Its totient is φ = 7026384512.

The previous prime is 21101301211. The next prime is 21101301229. The reversal of 21101301222 is 22210310112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101301229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839447 + ... + 1850882.

It is an arithmetic number, because the mean of its divisors is an integer number (2640431115).

Almost surely, 2^21101301222 is an apocalyptic number.

21101301222 is an abundant number, since it is smaller than the sum of its proper divisors (21145596618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21101301222 is a wasteful number, since it uses less digits than its factorization.

21101301222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691287.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21101301222 its reverse (22210310112), we get a palindrome (43311611334).

The spelling of 21101301222 in words is "twenty-one billion, one hundred one million, three hundred one thousand, two hundred twenty-two".