2142244352521 has 16 divisors (see below), whose sum is σ = 2636849509504. Its totient is φ = 1694807587584.

The previous prime is 2142244352519. The next prime is 2142244352527. The reversal of 2142244352521 is 1252534422412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2142244352521 - 2¹ = 2142244352519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2142244352527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70371 + ... + 2071096.

It is an arithmetic number, because the mean of its divisors is an integer number (164803094344).

Almost surely, 2^{2142244352521} is an apocalyptic number.

It is an amenable number.

2142244352521 is a deficient number, since it is larger than the sum of its proper divisors (494605156983).

2142244352521 is a wasteful number, since it uses less digits than its factorization.

2142244352521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152480.

The product of its digits is 153600, while the sum is 37.

Adding to 2142244352521 its reverse (1252534422412), we get a palindrome (3394778774933).

The spelling of 2142244352521 in words is "two trillion, one hundred forty-two billion, two hundred forty-four million, three hundred fifty-two thousand, five hundred twenty-one".