210012022201221 has 48 divisors (see below), whose sum is σ = 315952512190848. Its totient is φ = 134298935971200.

The previous prime is 210012022201181. The next prime is 210012022201259. The reversal of 210012022201221 is 122102220210012.

It is a happy number.

210012022201221 is a `hidden beast` number, since 2 + 100 + 120 + 2 + 220 + 1 + 221 = 666.

It is not a de Polignac number, because 210012022201221 - 2³⁸ = 209737144294277 is a prime.

It is a super-2 number, since 2×210012022201221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210012022201194 and 210012022201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012022101221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 520582731 + ... + 520985991.

It is an arithmetic number, because the mean of its divisors is an integer number (6582344003976).

Almost surely, 2^{210012022201221} is an apocalyptic number.

It is an amenable number.

210012022201221 is a deficient number, since it is larger than the sum of its proper divisors (105940489989627).

210012022201221 is a wasteful number, since it uses less digits than its factorization.

210012022201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425402 (or 425399 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210012022201221 its reverse (122102220210012), we get a palindrome (332114242411233).

The spelling of 210012022201221 in words is "two hundred ten trillion, twelve billion, twenty-two million, two hundred one thousand, two hundred twenty-one".