20121142351 has 8 divisors (see below), whose sum is σ = 20410385184. Its totient is φ = 19832267520.

The previous prime is 20121142337. The next prime is 20121142361. The reversal of 20121142351 is 15324112102.

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 20121142351 - 2⁹ = 20121141839 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 (20121142361) 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, 19095 + ... + 201511.

It is an arithmetic number, because the mean of its divisors is an integer number (2551298148).

Almost surely, 2^20121142351 is an apocalyptic number.

20121142351 is a deficient number, since it is larger than the sum of its proper divisors (289242833).

20121142351 is a wasteful number, since it uses less digits than its factorization.

20121142351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184001.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 20121142351 its reverse (15324112102), we get a palindrome (35445254453).

The spelling of 20121142351 in words is "twenty billion, one hundred twenty-one million, one hundred forty-two thousand, three hundred fifty-one".