2121001220210 has 32 divisors (see below), whose sum is σ = 3880392668352. Its totient is φ = 834528150720.

The previous prime is 2121001220209. The next prime is 2121001220243. The reversal of 2121001220210 is 120221001212.

It is a super-3 number, since 3×2121001220210³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1827677 + ... + 2753616.

It is an arithmetic number, because the mean of its divisors is an integer number (121262270886).

Almost surely, 2^{2121001220210} is an apocalyptic number.

2121001220210 is a deficient number, since it is larger than the sum of its proper divisors (1759391448142).

2121001220210 is a wasteful number, since it uses less digits than its factorization.

2121001220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582058.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121001220210 its reverse (120221001212), we get a palindrome (2241222221422).

The spelling of 2121001220210 in words is "two trillion, one hundred twenty-one billion, one million, two hundred twenty thousand, two hundred ten".