2121220110202 has 8 divisors (see below), whose sum is σ = 3181998849300. Its totient is φ = 1060553827104.

The previous prime is 2121220110181. The next prime is 2121220110227. The reversal of 2121220110202 is 2020110221212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1844818614081 + 276401496121 = 1358241^2 + 525739^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28066827 + ... + 28142302.

Almost surely, 2^{2121220110202} is an apocalyptic number.

2121220110202 is a deficient number, since it is larger than the sum of its proper divisors (1060778739098).

2121220110202 is a wasteful number, since it uses less digits than its factorization.

2121220110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56228000.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121220110202 its reverse (2020110221212), we get a palindrome (4141330331414).

The spelling of 2121220110202 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred ten thousand, two hundred two".