2121022010 has 16 divisors (see below), whose sum is σ = 3949489800. Its totient is φ = 819153216.

The previous prime is 2121021967. The next prime is 2121022021. The reversal of 2121022010 is 102201212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1609855129 + 511166881 = 40123^2 + 22609^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121021982 and 2121022000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3656645 + ... + 3657224.

Almost surely, 2^2121022010 is an apocalyptic number.

2121022010 is a deficient number, since it is larger than the sum of its proper divisors (1828467790).

2121022010 is a wasteful number, since it uses less digits than its factorization.

2121022010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7313905.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2121022010 is about 46054.5547150333. The cubic root of 2121022010 is about 1284.8380563731.

Adding to 2121022010 its reverse (102201212), we get a palindrome (2223223222).

The spelling of 2121022010 in words is "two billion, one hundred twenty-one million, twenty-two thousand, ten".