20211022021012 has 24 divisors (see below), whose sum is σ = 36638836000200. Its totient is φ = 9743733960576.

The previous prime is 20211022020991. The next prime is 20211022021037. The reversal of 20211022021012 is 21012022011202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3314861096976 + 16896160924036 = 1820676^2 + 4110494^2 .

It is a super-2 number, since 2×20211022021012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118764187 + ... + 118934242.

It is an arithmetic number, because the mean of its divisors is an integer number (1526618166675).

Almost surely, 2^{20211022021012} is an apocalyptic number.

It is an amenable number.

20211022021012 is a deficient number, since it is larger than the sum of its proper divisors (16427813979188).

20211022021012 is a wasteful number, since it uses less digits than its factorization.

20211022021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237699195 (or 237699193 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211022021012 its reverse (21012022011202), we get a palindrome (41223044032214).

The spelling of 20211022021012 in words is "twenty trillion, two hundred eleven billion, twenty-two million, twenty-one thousand, twelve".