1011520215242 has 16 divisors (see below), whose sum is σ = 1569377339712. Its totient is φ = 488633962080.

The previous prime is 1011520215161. The next prime is 1011520215247. The reversal of 1011520215242 is 2425120251101.

It is a happy number.

1011520215242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1011520215247) 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, 59873168 + ... + 59890059.

It is an arithmetic number, because the mean of its divisors is an integer number (98086083732).

Almost surely, 2^{1011520215242} is an apocalyptic number.

1011520215242 is a deficient number, since it is larger than the sum of its proper divisors (557857124470).

1011520215242 is a wasteful number, since it uses less digits than its factorization.

1011520215242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119763373.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 1011520215242 its reverse (2425120251101), we get a palindrome (3436640466343).

The spelling of 1011520215242 in words is "one trillion, eleven billion, five hundred twenty million, two hundred fifteen thousand, two hundred forty-two".