1011222212201 has 4 divisors (see below), whose sum is σ = 1023405612432. Its totient is φ = 999038811972.

The previous prime is 1011222212171. The next prime is 1011222212227. The reversal of 1011222212201 is 1022122221101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011222212201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011222212201.

It is not an unprimeable number, because it can be changed into a prime (1011222272201) 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, 6091699991 + ... + 6091700156.

It is an arithmetic number, because the mean of its divisors is an integer number (255851403108).

Almost surely, 2^{1011222212201} is an apocalyptic number.

It is an amenable number.

1011222212201 is a deficient number, since it is larger than the sum of its proper divisors (12183400231).

1011222212201 is an equidigital number, since it uses as much as digits as its factorization.

1011222212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12183400230.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1011222212201 its reverse (1022122221101), we get a palindrome (2033344433302).

The spelling of 1011222212201 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred one".