21202010002122 has 8 divisors (see below), whose sum is σ = 42404020004256. Its totient is φ = 7067336667372.

The previous prime is 21202010002109. The next prime is 21202010002123. The reversal of 21202010002122 is 22120001020212.

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

21202010002122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21202010002123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766834166838 + ... + 1766834166849.

It is an arithmetic number, because the mean of its divisors is an integer number (5300502500532).

Almost surely, 2^{21202010002122} is an apocalyptic number.

21202010002122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21202010002122 is a wasteful number, since it uses less digits than its factorization.

21202010002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533668333692.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21202010002122 its reverse (22120001020212), we get a palindrome (43322011022334).

The spelling of 21202010002122 in words is "twenty-one trillion, two hundred two billion, ten million, two thousand, one hundred twenty-two".