2221151206534 has 8 divisors (see below), whose sum is σ = 3588013487520. Its totient is φ = 1025146710696.

The previous prime is 2221151206517. The next prime is 2221151206541. The reversal of 2221151206534 is 4356021511222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2221151206534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42714446254 + ... + 42714446305.

It is an arithmetic number, because the mean of its divisors is an integer number (448501685940).

Almost surely, 2^{2221151206534} is an apocalyptic number.

2221151206534 is a deficient number, since it is larger than the sum of its proper divisors (1366862280986).

2221151206534 is a wasteful number, since it uses less digits than its factorization.

2221151206534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85428892574.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 2221151206534 its reverse (4356021511222), we get a palindrome (6577172717756).

The spelling of 2221151206534 in words is "two trillion, two hundred twenty-one billion, one hundred fifty-one million, two hundred six thousand, five hundred thirty-four".