20000212121011 has 32 divisors (see below), whose sum is σ = 20464415899200. Its totient is φ = 19542115676160.

The previous prime is 20000212120981. The next prime is 20000212121023. The reversal of 20000212121011 is 11012121200002.

It is a cyclic number.

It is not a de Polignac number, because 20000212121011 - 2²³ = 20000203732403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000212120982 and 20000212121000.

It is not an unprimeable number, because it can be changed into a prime (20000212121411) 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, 5234285481 + ... + 5234289301.

It is an arithmetic number, because the mean of its divisors is an integer number (639512996850).

Almost surely, 2^{20000212121011} is an apocalyptic number.

20000212121011 is a deficient number, since it is larger than the sum of its proper divisors (464203778189).

20000212121011 is a wasteful number, since it uses less digits than its factorization.

20000212121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20000212121011 its reverse (11012121200002), we get a palindrome (31012333321013).

The spelling of 20000212121011 in words is "twenty trillion, two hundred twelve million, one hundred twenty-one thousand, eleven".