1201120121211 has 16 divisors (see below), whose sum is σ = 1622112804000. Its totient is φ = 790466259968.

The previous prime is 1201120121059. The next prime is 1201120121221. The reversal of 1201120121211 is 1121210211021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201120121211 - 2²⁷ = 1200985903483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201120121221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3480786 + ... + 3810263.

It is an arithmetic number, because the mean of its divisors is an integer number (101382050250).

Almost surely, 2^{1201120121211} is an apocalyptic number.

1201120121211 is a deficient number, since it is larger than the sum of its proper divisors (420992682789).

1201120121211 is an equidigital number, since it uses as much as digits as its factorization.

1201120121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291758.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1201120121211 its reverse (1121210211021), we get a palindrome (2322330332232).

The spelling of 1201120121211 in words is "one trillion, two hundred one billion, one hundred twenty million, one hundred twenty-one thousand, two hundred eleven".