21221441301 has 16 divisors (see below), whose sum is σ = 28527206400. Its totient is φ = 14031723888.

The previous prime is 21221441291. The next prime is 21221441321. The reversal of 21221441301 is 10314412212.

It is not a de Polignac number, because 21221441301 - 2⁶ = 21221441237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221441321) 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, 1524310 + ... + 1538168.

It is an arithmetic number, because the mean of its divisors is an integer number (1782950400).

Almost surely, 2^21221441301 is an apocalyptic number.

It is an amenable number.

21221441301 is a deficient number, since it is larger than the sum of its proper divisors (7305765099).

21221441301 is a wasteful number, since it uses less digits than its factorization.

21221441301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18008.

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

Adding to 21221441301 its reverse (10314412212), we get a palindrome (31535853513).

The spelling of 21221441301 in words is "twenty-one billion, two hundred twenty-one million, four hundred forty-one thousand, three hundred one".