210122021011 has 16 divisors (see below), whose sum is σ = 254277467136. Its totient is φ = 169502092416.

The previous prime is 210122021009. The next prime is 210122021023. The reversal of 210122021011 is 110120221012.

It is a cyclic number.

It is not a de Polignac number, because 210122021011 - 2¹ = 210122021009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210122020982 and 210122021000.

It is not an unprimeable number, because it can be changed into a prime (210122024011) 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, 4494820 + ... + 4541326.

It is an arithmetic number, because the mean of its divisors is an integer number (15892341696).

Almost surely, 2^210122021011 is an apocalyptic number.

210122021011 is a deficient number, since it is larger than the sum of its proper divisors (44155446125).

210122021011 is a wasteful number, since it uses less digits than its factorization.

210122021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84498.

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

Adding to 210122021011 its reverse (110120221012), we get a palindrome (320242242023).

The spelling of 210122021011 in words is "two hundred ten billion, one hundred twenty-two million, twenty-one thousand, eleven".