213053221542 has 16 divisors (see below), whose sum is σ = 486978792192. Its totient is φ = 60872349000.

The previous prime is 213053221541. The next prime is 213053221561. The reversal of 213053221542 is 245122350312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213053221541) 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, 2536347834 + ... + 2536347917.

It is an arithmetic number, because the mean of its divisors is an integer number (30436174512).

Almost surely, 2^213053221542 is an apocalyptic number.

213053221542 is an abundant number, since it is smaller than the sum of its proper divisors (273925570650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213053221542 is a wasteful number, since it uses less digits than its factorization.

213053221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072695763.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 213053221542 its reverse (245122350312), we get a palindrome (458175571854).

The spelling of 213053221542 in words is "two hundred thirteen billion, fifty-three million, two hundred twenty-one thousand, five hundred forty-two".