142212111021 has 32 divisors (see below), whose sum is σ = 212816747520. Its totient is φ = 93849365232.

The previous prime is 142212110987. The next prime is 142212111023. The reversal of 142212111021 is 120111212241.

142212111021 is a `hidden beast` number, since 1 + 422 + 1 + 211 + 10 + 21 = 666.

It is not a de Polignac number, because 142212111021 - 2¹⁴ = 142212094637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142212110985 and 142212111003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142212111023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7897390 + ... + 7915376.

It is an arithmetic number, because the mean of its divisors is an integer number (6650523360).

Almost surely, 2^142212111021 is an apocalyptic number.

It is an amenable number.

142212111021 is a deficient number, since it is larger than the sum of its proper divisors (70604636499).

142212111021 is a wasteful number, since it uses less digits than its factorization.

142212111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20942 (or 20936 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 142212111021 its reverse (120111212241), we get a palindrome (262323323262).

The spelling of 142212111021 in words is "one hundred forty-two billion, two hundred twelve million, one hundred eleven thousand, twenty-one".