10211011021021 has 4 divisors (see below), whose sum is σ = 10540398473344. Its totient is φ = 9881623568700.

The previous prime is 10211011021007. The next prime is 10211011021031. The reversal of 10211011021021 is 12012011011201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10211011021021 - 2¹⁵ = 10211010988253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211011020992 and 10211011021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211011021031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164693726115 + ... + 164693726176.

It is an arithmetic number, because the mean of its divisors is an integer number (2635099618336).

Almost surely, 2^{10211011021021} is an apocalyptic number.

It is an amenable number.

10211011021021 is a deficient number, since it is larger than the sum of its proper divisors (329387452323).

10211011021021 is an equidigital number, since it uses as much as digits as its factorization.

10211011021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329387452322.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10211011021021 its reverse (12012011011201), we get a palindrome (22223022032222).

The spelling of 10211011021021 in words is "ten trillion, two hundred eleven billion, eleven million, twenty-one thousand, twenty-one".