1213500514442 has 4 divisors (see below), whose sum is σ = 1820250771666. Its totient is φ = 606750257220.

The previous prime is 1213500514423. The next prime is 1213500514453. The reversal of 1213500514442 is 2444150053121.

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., 1210349825281 + 3150689161 = 1100159^2 + 56131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1213500514399 and 1213500514408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303375128609 + ... + 303375128612.

Almost surely, 2^{1213500514442} is an apocalyptic number.

1213500514442 is a deficient number, since it is larger than the sum of its proper divisors (606750257224).

1213500514442 is an equidigital number, since it uses as much as digits as its factorization.

1213500514442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606750257223.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 1213500514442 its reverse (2444150053121), we get a palindrome (3657650567563).

The spelling of 1213500514442 in words is "one trillion, two hundred thirteen billion, five hundred million, five hundred fourteen thousand, four hundred forty-two".