142212207621 has 24 divisors (see below), whose sum is σ = 211531997152. Its totient is φ = 84902796000.

The previous prime is 142212207619. The next prime is 142212207667. The reversal of 142212207621 is 126702212241.

It is not a de Polignac number, because 142212207621 - 2¹ = 142212207619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142212207121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2899330 + ... + 2947971.

Almost surely, 2^142212207621 is an apocalyptic number.

142212207621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142212207621 is a deficient number, since it is larger than the sum of its proper divisors (69319789531).

142212207621 is a wasteful number, since it uses less digits than its factorization.

142212207621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847393 (or 5847382 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

Adding to 142212207621 its reverse (126702212241), we get a palindrome (268914419862).

The spelling of 142212207621 in words is "one hundred forty-two billion, two hundred twelve million, two hundred seven thousand, six hundred twenty-one".