20001212142 has 8 divisors (see below), whose sum is σ = 40002424296. Its totient is φ = 6667070712.

The previous prime is 20001212141. The next prime is 20001212173. The reversal of 20001212142 is 24121210002.

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

20001212142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001212141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666767673 + ... + 1666767684.

It is an arithmetic number, because the mean of its divisors is an integer number (5000303037).

Almost surely, 2^20001212142 is an apocalyptic number.

20001212142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001212142 is a wasteful number, since it uses less digits than its factorization.

20001212142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333535362.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20001212142 its reverse (24121210002), we get a palindrome (44122422144).

The spelling of 20001212142 in words is "twenty billion, one million, two hundred twelve thousand, one hundred forty-two".