1212100201 has 16 divisors (see below), whose sum is σ = 1314686464. Its totient is φ = 1110884544.

The previous prime is 1212100181. The next prime is 1212100213. The reversal of 1212100201 is 1020012121.

It is a cyclic number.

It is not a de Polignac number, because 1212100201 - 2¹⁵ = 1212067433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212101201) 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, 1666900 + ... + 1667626.

It is an arithmetic number, because the mean of its divisors is an integer number (82167904).

Almost surely, 2^1212100201 is an apocalyptic number.

It is an amenable number.

1212100201 is a deficient number, since it is larger than the sum of its proper divisors (102586263).

1212100201 is a wasteful number, since it uses less digits than its factorization.

1212100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1212100201 is about 34815.2294405767. The cubic root of 1212100201 is about 1066.2184035181.

Adding to 1212100201 its reverse (1020012121), we get a palindrome (2232112322).

The spelling of 1212100201 in words is "one billion, two hundred twelve million, one hundred thousand, two hundred one".