20011021220210 has 64 divisors (see below), whose sum is σ = 37955906380800. Its totient is φ = 7584884412672.

The previous prime is 20011021220159. The next prime is 20011021220243. The reversal of 20011021220210 is 1202212011002.

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, 9422384 + ... + 11349156.

It is an arithmetic number, because the mean of its divisors is an integer number (593061037200).

Almost surely, 2^{20011021220210} is an apocalyptic number.

20011021220210 is a deficient number, since it is larger than the sum of its proper divisors (17944885160590).

20011021220210 is a wasteful number, since it uses less digits than its factorization.

20011021220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927475.

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

Adding to 20011021220210 its reverse (1202212011002), we get a palindrome (21213233231212).

The spelling of 20011021220210 in words is "twenty trillion, eleven billion, twenty-one million, two hundred twenty thousand, two hundred ten".