212021011001 has 8 divisors (see below), whose sum is σ = 223189994400. Its totient is φ = 200853025920.

The previous prime is 212021010989. The next prime is 212021011087. The reversal of 212021011001 is 100110120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021011001 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 (212021011801) 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, 207881 + ... + 683561.

It is an arithmetic number, because the mean of its divisors is an integer number (27898749300).

Almost surely, 2^212021011001 is an apocalyptic number.

It is an amenable number.

212021011001 is a deficient number, since it is larger than the sum of its proper divisors (11168983399).

212021011001 is a wasteful number, since it uses less digits than its factorization.

212021011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499159.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212021011001 its reverse (100110120212), we get a palindrome (312131131213).

The spelling of 212021011001 in words is "two hundred twelve billion, twenty-one million, eleven thousand, one".