142110515221221 has 4 divisors (see below), whose sum is σ = 189480686961632. Its totient is φ = 94740343480812.

The previous prime is 142110515221177. The next prime is 142110515221253. The reversal of 142110515221221 is 122122515011241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 142110515221221 - 2¹⁴ = 142110515204837 is a prime.

It is a super-3 number, since 3×142110515221221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142110515220221) 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, 23685085870201 + ... + 23685085870206.

It is an arithmetic number, because the mean of its divisors is an integer number (47370171740408).

Almost surely, 2^{142110515221221} is an apocalyptic number.

It is an amenable number.

142110515221221 is a deficient number, since it is larger than the sum of its proper divisors (47370171740411).

142110515221221 is an equidigital number, since it uses as much as digits as its factorization.

142110515221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47370171740410.

The product of its (nonzero) digits is 3200, while the sum is 30.

The spelling of 142110515221221 in words is "one hundred forty-two trillion, one hundred ten billion, five hundred fifteen million, two hundred twenty-one thousand, two hundred twenty-one".