10021121011 has 8 divisors (see below), whose sum is σ = 11038270464. Its totient is φ = 9021661320.

The previous prime is 10021121009. The next prime is 10021121029. The reversal of 10021121011 is 11012112001.

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 10021121011 - 2¹ = 10021121009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021121711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4421251 + ... + 4423516.

It is an arithmetic number, because the mean of its divisors is an integer number (1379783808).

Almost surely, 2^10021121011 is an apocalyptic number.

10021121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10021121011 is a deficient number, since it is larger than the sum of its proper divisors (1017149453).

10021121011 is a wasteful number, since it uses less digits than its factorization.

10021121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8844881.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10021121011 its reverse (11012112001), we get a palindrome (21033233012).

The spelling of 10021121011 in words is "ten billion, twenty-one million, one hundred twenty-one thousand, eleven".