2012011101221 has 16 divisors (see below), whose sum is σ = 2205413504448. Its totient is φ = 1820366956800.

The previous prime is 2012011101209. The next prime is 2012011101371. The reversal of 2012011101221 is 1221011102102.

It is a cyclic number.

It is not a de Polignac number, because 2012011101221 - 2³⁰ = 2010937359397 is a prime.

It is a super-2 number, since 2×2012011101221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2012011101196 and 2012011101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012011109221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3996026 + ... + 4471268.

It is an arithmetic number, because the mean of its divisors is an integer number (137838344028).

Almost surely, 2^{2012011101221} is an apocalyptic number.

It is an amenable number.

2012011101221 is a deficient number, since it is larger than the sum of its proper divisors (193402403227).

2012011101221 is a wasteful number, since it uses less digits than its factorization.

2012011101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477092.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2012011101221 its reverse (1221011102102), we get a palindrome (3233022203323).

The spelling of 2012011101221 in words is "two trillion, twelve billion, eleven million, one hundred one thousand, two hundred twenty-one".