212012120021101 has 16 divisors (see below), whose sum is σ = 222512067048960. Its totient is φ = 201619042894720.

The previous prime is 212012120021089. The next prime is 212012120021113. The reversal of 212012120021101 is 101120021210212.

It is an interprime number because it is at equal distance from previous prime (212012120021089) and next prime (212012120021113).

It is a cyclic number.

It is not a de Polignac number, because 212012120021101 - 2¹¹ = 212012120019053 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 (212012120081101) 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, 302368161 + ... + 303068521.

It is an arithmetic number, because the mean of its divisors is an integer number (13907004190560).

Almost surely, 2^{212012120021101} is an apocalyptic number.

It is an amenable number.

212012120021101 is a deficient number, since it is larger than the sum of its proper divisors (10499947027859).

212012120021101 is a wasteful number, since it uses less digits than its factorization.

212012120021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776636.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212012120021101 its reverse (101120021210212), we get a palindrome (313132141231313).

The spelling of 212012120021101 in words is "two hundred twelve trillion, twelve billion, one hundred twenty million, twenty-one thousand, one hundred one".