1202121112442 has 4 divisors (see below), whose sum is σ = 1803181668666. Its totient is φ = 601060556220.

The previous prime is 1202121112441. The next prime is 1202121112457. The reversal of 1202121112442 is 2442111212021.

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

It can be written as a sum of positive squares in only one way, i.e., 1152163945321 + 49957167121 = 1073389^2 + 223511^2 .

It is not an unprimeable number, because it can be changed into a prime (1202121112441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300530278109 + ... + 300530278112.

Almost surely, 2^{1202121112442} is an apocalyptic number.

1202121112442 is a deficient number, since it is larger than the sum of its proper divisors (601060556224).

1202121112442 is an equidigital number, since it uses as much as digits as its factorization.

1202121112442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601060556223.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 1202121112442 its reverse (2442111212021), we get a palindrome (3644232324463).

The spelling of 1202121112442 in words is "one trillion, two hundred two billion, one hundred twenty-one million, one hundred twelve thousand, four hundred forty-two".