142211011421 has 8 divisors (see below), whose sum is σ = 150758016120. Its totient is φ = 133684190208.

The previous prime is 142211011417. The next prime is 142211011427. The reversal of 142211011421 is 124110112241.

It can be written as a sum of positive squares in 4 ways, for example, as 47180618521 + 95030392900 = 217211^2 + 308270^2 .

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 142211011421 - 2² = 142211011417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142211011393 and 142211011402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142211011427) 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, 5031356 + ... + 5059541.

It is an arithmetic number, because the mean of its divisors is an integer number (18844752015).

Almost surely, 2^142211011421 is an apocalyptic number.

It is an amenable number.

142211011421 is a deficient number, since it is larger than the sum of its proper divisors (8547004699).

142211011421 is a wasteful number, since it uses less digits than its factorization.

142211011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091743.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 142211011421 its reverse (124110112241), we get a palindrome (266321123662).

The spelling of 142211011421 in words is "one hundred forty-two billion, two hundred eleven million, eleven thousand, four hundred twenty-one".