20011212321110 has 8 divisors (see below), whose sum is σ = 36020182178016. Its totient is φ = 8004484928440.

The previous prime is 20011212321101. The next prime is 20011212321119. The reversal of 20011212321110 is 1112321211002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20011212321101) and next prime (20011212321119).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011212321119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000560616046 + ... + 1000560616065.

It is an arithmetic number, because the mean of its divisors is an integer number (4502522772252).

Almost surely, 2^{20011212321110} is an apocalyptic number.

20011212321110 is a deficient number, since it is larger than the sum of its proper divisors (16008969856906).

20011212321110 is a wasteful number, since it uses less digits than its factorization.

20011212321110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001121232118.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20011212321110 its reverse (1112321211002), we get a palindrome (21123533532112).

The spelling of 20011212321110 in words is "twenty trillion, eleven billion, two hundred twelve million, three hundred twenty-one thousand, one hundred ten".