1211112022001 has 8 divisors (see below), whose sum is σ = 1385797667520. Its totient is φ = 1036843787088.

The previous prime is 1211112021997. The next prime is 1211112022027. The reversal of 1211112022001 is 1002202111121.

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

It is a cyclic number.

It is not a de Polignac number, because 1211112022001 - 2² = 1211112021997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211112022091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104346431 + ... + 104358036.

It is an arithmetic number, because the mean of its divisors is an integer number (173224708440).

Almost surely, 2^{1211112022001} is an apocalyptic number.

It is an amenable number.

1211112022001 is a deficient number, since it is larger than the sum of its proper divisors (174685645519).

1211112022001 is an equidigital number, since it uses as much as digits as its factorization.

1211112022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208705303.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211112022001 its reverse (1002202111121), we get a palindrome (2213314133122).

It can be divided in two parts, 12111120 and 22001, that added together give a palindrome (12133121).

The spelling of 1211112022001 in words is "one trillion, two hundred eleven billion, one hundred twelve million, twenty-two thousand, one".