20212861038742 has 16 divisors (see below), whose sum is σ = 30365231813280. Its totient is φ = 10091117981952.

The previous prime is 20212861038731. The next prime is 20212861038761. The reversal of 20212861038742 is 24783016821202.

It is a junction number, because it is equal to n+sod(n) for n = 20212861038692 and 20212861038701.

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, 50016663 + ... + 50419165.

It is an arithmetic number, because the mean of its divisors is an integer number (1897826988330).

Almost surely, 2^{20212861038742} is an apocalyptic number.

20212861038742 is a deficient number, since it is larger than the sum of its proper divisors (10152370774538).

20212861038742 is a wasteful number, since it uses less digits than its factorization.

20212861038742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440487.

The product of its (nonzero) digits is 516096, while the sum is 46.

Adding to 20212861038742 its reverse (24783016821202), we get a palindrome (44995877859944).

The spelling of 20212861038742 in words is "twenty trillion, two hundred twelve billion, eight hundred sixty-one million, thirty-eight thousand, seven hundred forty-two".