1101212211201 has 32 divisors (see below), whose sum is σ = 1556001807360. Its totient is φ = 691555765824.

The previous prime is 1101212211157. The next prime is 1101212211221. The reversal of 1101212211201 is 1021122121011.

It is a happy number.

It is not a de Polignac number, because 1101212211201 - 2¹³ = 1101212203009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101212211221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3136620 + ... + 3469986.

It is an arithmetic number, because the mean of its divisors is an integer number (48625056480).

Almost surely, 2^{1101212211201} is an apocalyptic number.

It is an amenable number.

1101212211201 is a deficient number, since it is larger than the sum of its proper divisors (454789596159).

1101212211201 is a wasteful number, since it uses less digits than its factorization.

1101212211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334325.

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

Adding to 1101212211201 its reverse (1021122121011), we get a palindrome (2122334332212).

The spelling of 1101212211201 in words is "one trillion, one hundred one billion, two hundred twelve million, two hundred eleven thousand, two hundred one".