142121332211 has 16 divisors (see below), whose sum is σ = 148788576000. Its totient is φ = 135495481440.

The previous prime is 142121332187. The next prime is 142121332229. The reversal of 142121332211 is 112233121241.

It is a cyclic number.

It is not a de Polignac number, because 142121332211 - 2²² = 142117137907 is a prime.

It is a super-2 number, since 2×142121332211² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142121332291) 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, 9415076 + ... + 9430158.

It is an arithmetic number, because the mean of its divisors is an integer number (9299286000).

Almost surely, 2^142121332211 is an apocalyptic number.

142121332211 is a deficient number, since it is larger than the sum of its proper divisors (6667243789).

142121332211 is a wasteful number, since it uses less digits than its factorization.

142121332211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16426.

The product of its digits is 576, while the sum is 23.

Adding to 142121332211 its reverse (112233121241), we get a palindrome (254354453452).

The spelling of 142121332211 in words is "one hundred forty-two billion, one hundred twenty-one million, three hundred thirty-two thousand, two hundred eleven".