20111021211022 has 16 divisors (see below), whose sum is σ = 34557927194592. Its totient is φ = 8598536382240.

The previous prime is 20111021211011. The next prime is 20111021211059. The reversal of 20111021211022 is 22011212011102.

It is a junction number, because it is equal to n+sod(n) for n = 20111021210987 and 20111021211005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1706052913 + ... + 1706064700.

It is an arithmetic number, because the mean of its divisors is an integer number (2159870449662).

Almost surely, 2^{20111021211022} is an apocalyptic number.

20111021211022 is a deficient number, since it is larger than the sum of its proper divisors (14446905983570).

20111021211022 is a wasteful number, since it uses less digits than its factorization.

20111021211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412118043.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111021211022 its reverse (22011212011102), we get a palindrome (42122233222124).

The spelling of 20111021211022 in words is "twenty trillion, one hundred eleven billion, twenty-one million, two hundred eleven thousand, twenty-two".