11221240142401 has 8 divisors (see below), whose sum is σ = 12171101216904. Its totient is φ = 10303577748480.

The previous prime is 11221240142383. The next prime is 11221240142423. The reversal of 11221240142401 is 10424104212211.

It can be written as a sum of positive squares in 4 ways, for example, as 3448987551025 + 7772252591376 = 1857145^2 + 2787876^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11221240142401 - 2²⁷ = 11221105924673 is a prime.

It is a super-2 number, since 2×11221240142401² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221240142701) 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, 8049669420 + ... + 8049670813.

It is an arithmetic number, because the mean of its divisors is an integer number (1521387652113).

Almost surely, 2^{11221240142401} is an apocalyptic number.

It is an amenable number.

11221240142401 is a deficient number, since it is larger than the sum of its proper divisors (949861074503).

11221240142401 is a wasteful number, since it uses less digits than its factorization.

11221240142401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16099340291.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 11221240142401 its reverse (10424104212211), we get a palindrome (21645344354612).

It can be divided in two parts, 11221240 and 142401, that added together give a square (11363641 = 3371²).

The spelling of 11221240142401 in words is "eleven trillion, two hundred twenty-one billion, two hundred forty million, one hundred forty-two thousand, four hundred one".