20021201002026 has 64 divisors (see below), whose sum is σ = 50932100002560. Its totient is φ = 5710825036800.

The previous prime is 20021201001979. The next prime is 20021201002027. The reversal of 20021201002026 is 62020010212002.

It is a super-2 number, since 2×20021201002026² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20021201002027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43837831 + ... + 44292186.

It is an arithmetic number, because the mean of its divisors is an integer number (795814062540).

Almost surely, 2^{20021201002026} is an apocalyptic number.

20021201002026 is an abundant number, since it is smaller than the sum of its proper divisors (30910899000534).

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

20021201002026 is a wasteful number, since it uses less digits than its factorization.

20021201002026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88130636 (or 88130630 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20021201002026 its reverse (62020010212002), we get a palindrome (82041211214028).

The spelling of 20021201002026 in words is "twenty trillion, twenty-one billion, two hundred one million, two thousand, twenty-six".