20021210210210 has 64 divisors (see below), whose sum is σ = 39523007462400. Its totient is φ = 7241904964800.

The previous prime is 20021210210137. The next prime is 20021210210251. The reversal of 20021210210210 is 1201201212002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15357701 + ... + 16610279.

It is an arithmetic number, because the mean of its divisors is an integer number (617546991600).

Almost surely, 2^{20021210210210} is an apocalyptic number.

20021210210210 is a deficient number, since it is larger than the sum of its proper divisors (19501797252190).

20021210210210 is a wasteful number, since it uses less digits than its factorization.

20021210210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253367.

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

Adding to 20021210210210 its reverse (1201201212002), we get a palindrome (21222411422212).

The spelling of 20021210210210 in words is "twenty trillion, twenty-one billion, two hundred ten million, two hundred ten thousand, two hundred ten".