20121202111010 has 128 divisors (see below), whose sum is σ = 48783954046464. Its totient is φ = 5770620610560.

The previous prime is 20121202110991. The next prime is 20121202111013. The reversal of 20121202111010 is 1011120212102.

It is a super-2 number, since 2×20121202111010² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20121202111013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77909 + ... + 6344168.

It is an arithmetic number, because the mean of its divisors is an integer number (381124640988).

Almost surely, 2^{20121202111010} is an apocalyptic number.

20121202111010 is an abundant number, since it is smaller than the sum of its proper divisors (28662751935454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121202111010 is a wasteful number, since it uses less digits than its factorization.

20121202111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422428.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121202111010 its reverse (1011120212102), we get a palindrome (21132322323112).

The spelling of 20121202111010 in words is "twenty trillion, one hundred twenty-one billion, two hundred two million, one hundred eleven thousand, ten".