212101120021002 has 16 divisors (see below), whose sum is σ = 424800550685280. Its totient is φ = 70600654899792.

The previous prime is 212101120020989. The next prime is 212101120021003. The reversal of 212101120021002 is 200120021101212.

It is a super-2 number, since 2×212101120021002² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212101120021003) 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, 24929605528 + ... + 24929614035.

It is an arithmetic number, because the mean of its divisors is an integer number (26550034417830).

Almost surely, 2^{212101120021002} is an apocalyptic number.

212101120021002 is an abundant number, since it is smaller than the sum of its proper divisors (212699430664278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212101120021002 is a wasteful number, since it uses less digits than its factorization.

212101120021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49859220277.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212101120021002 its reverse (200120021101212), we get a palindrome (412221141122214).

The spelling of 212101120021002 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty million, twenty-one thousand, two".