21212202120301 has 16 divisors (see below), whose sum is σ = 21635891672704. Its totient is φ = 20792124347904.

The previous prime is 21212202120293. The next prime is 21212202120311. The reversal of 21212202120301 is 10302120221212.

It is a cyclic number.

It is not a de Polignac number, because 21212202120301 - 2³ = 21212202120293 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 (21212202120311) 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, 285622165 + ... + 285696421.

It is an arithmetic number, because the mean of its divisors is an integer number (1352243229544).

Almost surely, 2^{21212202120301} is an apocalyptic number.

It is an amenable number.

21212202120301 is a deficient number, since it is larger than the sum of its proper divisors (423689552403).

21212202120301 is a wasteful number, since it uses less digits than its factorization.

21212202120301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98500.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21212202120301 its reverse (10302120221212), we get a palindrome (31514322341513).

The spelling of 21212202120301 in words is "twenty-one trillion, two hundred twelve billion, two hundred two million, one hundred twenty thousand, three hundred one".