21120220002010 has 32 divisors (see below), whose sum is σ = 39669826204800. Its totient is φ = 8080669130688.

The previous prime is 21120220001971. The next prime is 21120220002017. The reversal of 21120220002010 is 1020002202112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21120220002017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17306941 + ... + 18487039.

It is an arithmetic number, because the mean of its divisors is an integer number (1239682068900).

Almost surely, 2^{21120220002010} is an apocalyptic number.

21120220002010 is a deficient number, since it is larger than the sum of its proper divisors (18549606202790).

21120220002010 is a wasteful number, since it uses less digits than its factorization.

21120220002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257942.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21120220002010 its reverse (1020002202112), we get a palindrome (22140222204122).

The spelling of 21120220002010 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty million, two thousand, ten".