20010010211121 has 48 divisors (see below), whose sum is σ = 31093184185344. Its totient is φ = 11413218843936.

The previous prime is 20010010211117. The next prime is 20010010211153. The reversal of 20010010211121 is 12111201001002.

It is not a de Polignac number, because 20010010211121 - 2² = 20010010211117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010010211097 and 20010010211106.

It is not an unprimeable number, because it can be changed into a prime (20010010211171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176668110 + ... + 176781336.

It is an arithmetic number, because the mean of its divisors is an integer number (647774670528).

Almost surely, 2^{20010010211121} is an apocalyptic number.

20010010211121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20010010211121 is a deficient number, since it is larger than the sum of its proper divisors (11083173974223).

20010010211121 is a wasteful number, since it uses less digits than its factorization.

20010010211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115450 (or 115443 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20010010211121 its reverse (12111201001002), we get a palindrome (32121211212123).

The spelling of 20010010211121 in words is "twenty trillion, ten billion, ten million, two hundred eleven thousand, one hundred twenty-one".