212001220101 has 16 divisors (see below), whose sum is σ = 308404819008. Its totient is φ = 128469168000.

The previous prime is 212001220097. The next prime is 212001220103. The reversal of 212001220101 is 101022100212.

It is not a de Polignac number, because 212001220101 - 2² = 212001220097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001220103) 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, 145816 + ... + 667281.

It is an arithmetic number, because the mean of its divisors is an integer number (19275301188).

Almost surely, 2^212001220101 is an apocalyptic number.

It is an amenable number.

212001220101 is a deficient number, since it is larger than the sum of its proper divisors (96403598907).

212001220101 is a wasteful number, since it uses less digits than its factorization.

212001220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821012.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212001220101 its reverse (101022100212), we get a palindrome (313023320313).

The spelling of 212001220101 in words is "two hundred twelve billion, one million, two hundred twenty thousand, one hundred one".