1121222201 has 4 divisors (see below), whose sum is σ = 1223151504. Its totient is φ = 1019292900.

The previous prime is 1121222197. The next prime is 1121222209. The reversal of 1121222201 is 1022221211.

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 not a de Polignac number, because 1121222201 - 2² = 1121222197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121222209) 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, 50964635 + ... + 50964656.

It is an arithmetic number, because the mean of its divisors is an integer number (305787876).

Almost surely, 2^1121222201 is an apocalyptic number.

1121222201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121222201 is a deficient number, since it is larger than the sum of its proper divisors (101929303).

1121222201 is a wasteful number, since it uses less digits than its factorization.

1121222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101929302.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1121222201 is about 33484.6562025056. The cubic root of 1121222201 is about 1038.8764373002.

Adding to 1121222201 its reverse (1022221211), we get a palindrome (2143443412).

It can be divided in two parts, 1121 and 222201, that added together give a palindrome (223322).

The spelling of 1121222201 in words is "one billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred one".