212021023011 has 32 divisors (see below), whose sum is σ = 353880368640. Its totient is φ = 110096103936.

The previous prime is 212021022973. The next prime is 212021023013. The reversal of 212021023011 is 110320120212.

It is not a de Polignac number, because 212021023011 - 2³⁵ = 177661284643 is a prime.

It is a super-2 number, since 2×212021023011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212021023013) 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, 10229241 + ... + 10249946.

It is an arithmetic number, because the mean of its divisors is an integer number (11058761520).

Almost surely, 2^212021023011 is an apocalyptic number.

212021023011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212021023011 is a deficient number, since it is larger than the sum of its proper divisors (141859345629).

212021023011 is a wasteful number, since it uses less digits than its factorization.

212021023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20479243.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212021023011 its reverse (110320120212), we get a palindrome (322341143223).

The spelling of 212021023011 in words is "two hundred twelve billion, twenty-one million, twenty-three thousand, eleven".