121121302142 has 4 divisors (see below), whose sum is σ = 181681953216. Its totient is φ = 60560651070.

The previous prime is 121121302121. The next prime is 121121302153. The reversal of 121121302142 is 241203121121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30280325534 + ... + 30280325537.

It is an arithmetic number, because the mean of its divisors is an integer number (45420488304).

Almost surely, 2^121121302142 is an apocalyptic number.

121121302142 is a deficient number, since it is larger than the sum of its proper divisors (60560651074).

121121302142 is an equidigital number, since it uses as much as digits as its factorization.

121121302142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60560651073.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121121302142 its reverse (241203121121), we get a palindrome (362324423263).

The spelling of 121121302142 in words is "one hundred twenty-one billion, one hundred twenty-one million, three hundred two thousand, one hundred forty-two".