212120030101 has 32 divisors (see below), whose sum is σ = 248099385600. Its totient is φ = 177612963840.

The previous prime is 212120030099. The next prime is 212120030117. The reversal of 212120030101 is 101030021212.

It is a cyclic number.

It is not a de Polignac number, because 212120030101 - 2¹ = 212120030099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120030131) 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, 38086645 + ... + 38092213.

It is an arithmetic number, because the mean of its divisors is an integer number (7753105800).

Almost surely, 2^212120030101 is an apocalyptic number.

It is an amenable number.

212120030101 is a deficient number, since it is larger than the sum of its proper divisors (35979355499).

212120030101 is a wasteful number, since it uses less digits than its factorization.

212120030101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6349.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 212120030101 its reverse (101030021212), we get a palindrome (313150051313).

The spelling of 212120030101 in words is "two hundred twelve billion, one hundred twenty million, thirty thousand, one hundred one".