21221102002010 has 16 divisors (see below), whose sum is σ = 38199070301472. Its totient is φ = 8488199312400.

The previous prime is 21221102002007. The next prime is 21221102002013. The reversal of 21221102002010 is 1020020112212.

It is an interprime number because it is at equal distance from previous prime (21221102002007) and next prime (21221102002013).

It is not an unprimeable number, because it can be changed into a prime (21221102002013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29816756 + ... + 30520175.

It is an arithmetic number, because the mean of its divisors is an integer number (2387441893842).

Almost surely, 2^{21221102002010} is an apocalyptic number.

21221102002010 is a deficient number, since it is larger than the sum of its proper divisors (16977968299462).

21221102002010 is a wasteful number, since it uses less digits than its factorization.

21221102002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60372109.

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

Adding to 21221102002010 its reverse (1020020112212), we get a palindrome (22241122114222).

The spelling of 21221102002010 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred two million, two thousand, ten".