1212100211201 has 8 divisors (see below), whose sum is σ = 1322328893184. Its totient is φ = 1101877821520.

The previous prime is 1212100211197. The next prime is 1212100211219. The reversal of 1212100211201 is 1021120012121.

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 1212100211201 - 2² = 1212100211197 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 (1212100211251) 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, 1165706 + ... + 1945011.

It is an arithmetic number, because the mean of its divisors is an integer number (165291111648).

Almost surely, 2^{1212100211201} is an apocalyptic number.

1212100211201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212100211201 is a deficient number, since it is larger than the sum of its proper divisors (110228681983).

1212100211201 is a wasteful number, since it uses less digits than its factorization.

1212100211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146151.

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

Adding to 1212100211201 its reverse (1021120012121), we get a palindrome (2233220223322).

The spelling of 1212100211201 in words is "one trillion, two hundred twelve billion, one hundred million, two hundred eleven thousand, two hundred one".