201212021011 has 8 divisors (see below), whose sum is σ = 214353961920. Its totient is φ = 188325263592.

The previous prime is 201212021009. The next prime is 201212021033. The reversal of 201212021011 is 110120212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201212021011 - 2¹ = 201212021009 is a prime.

It is a super-2 number, since 2×201212021011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201212020982 and 201212021000.

It is not an unprimeable number, because it can be changed into a prime (201212021041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63794245 + ... + 63797398.

It is an arithmetic number, because the mean of its divisors is an integer number (26794245240).

Almost surely, 2^201212021011 is an apocalyptic number.

201212021011 is a deficient number, since it is larger than the sum of its proper divisors (13141940909).

201212021011 is a wasteful number, since it uses less digits than its factorization.

201212021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127591745.

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

Adding to 201212021011 its reverse (110120212102), we get a palindrome (311332233113).

The spelling of 201212021011 in words is "two hundred one billion, two hundred twelve million, twenty-one thousand, eleven".