21220022311000 has 64 divisors (see below), whose sum is σ = 49681740588480. Its totient is φ = 8483412620800.

The previous prime is 21220022310997. The next prime is 21220022311063. The reversal of 21220022311000 is 11322002212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3897457 + ... + 7591456.

It is an arithmetic number, because the mean of its divisors is an integer number (776277196695).

Almost surely, 2^{21220022311000} is an apocalyptic number.

21220022311000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220022311000 is an abundant number, since it is smaller than the sum of its proper divisors (28461718277480).

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

21220022311000 is a wasteful number, since it uses less digits than its factorization.

21220022311000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11490781 (or 11490767 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21220022311000 its reverse (11322002212), we get a palindrome (21231344313212).

The spelling of 21220022311000 in words is "twenty-one trillion, two hundred twenty billion, twenty-two million, three hundred eleven thousand".