2201211016651 has 4 divisors (see below), whose sum is σ = 2212384676832. Its totient is φ = 2190037356472.

The previous prime is 2201211016583. The next prime is 2201211016673. The reversal of 2201211016651 is 1566101121022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2201211016651 - 2¹³ = 2201211008459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201211016951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5586829795 + ... + 5586830188.

It is an arithmetic number, because the mean of its divisors is an integer number (553096169208).

Almost surely, 2^{2201211016651} is an apocalyptic number.

2201211016651 is a deficient number, since it is larger than the sum of its proper divisors (11173660181).

2201211016651 is a wasteful number, since it uses less digits than its factorization.

2201211016651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11173660180.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 2201211016651 its reverse (1566101121022), we get a palindrome (3767312137673).

The spelling of 2201211016651 in words is "two trillion, two hundred one billion, two hundred eleven million, sixteen thousand, six hundred fifty-one".