1212102001 has 16 divisors (see below), whose sum is σ = 1398706560. Its totient is φ = 1039547520.

The previous prime is 1212101963. The next prime is 1212102013. The reversal of 1212102001 is 1002012121.

It is a de Polignac number, because none of the positive numbers 2^k-1212102001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212102041) 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, 14346 + ... + 51283.

It is an arithmetic number, because the mean of its divisors is an integer number (87419160).

Almost surely, 2^1212102001 is an apocalyptic number.

1212102001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212102001 is a deficient number, since it is larger than the sum of its proper divisors (186604559).

1212102001 is a wasteful number, since it uses less digits than its factorization.

1212102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65736.

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

The square root of 1212102001 is about 34815.2552913231. The cubic root of 1212102001 is about 1066.2189313051.

Adding to 1212102001 its reverse (1002012121), we get a palindrome (2214114122).

The spelling of 1212102001 in words is "one billion, two hundred twelve million, one hundred two thousand, one".