10202121011011 has 4 divisors (see below), whose sum is σ = 10254981741832. Its totient is φ = 10149260280192.

The previous prime is 10202121011003. The next prime is 10202121011029. The reversal of 10202121011011 is 11011012120201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10202121011011 - 2³ = 10202121011003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10202121010982 and 10202121011000.

It is not an unprimeable number, because it can be changed into a prime (10202121011311) 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, 26430365121 + ... + 26430365506.

It is an arithmetic number, because the mean of its divisors is an integer number (2563745435458).

Almost surely, 2^{10202121011011} is an apocalyptic number.

10202121011011 is a deficient number, since it is larger than the sum of its proper divisors (52860730821).

10202121011011 is an equidigital number, since it uses as much as digits as its factorization.

10202121011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52860730820.

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

Adding to 10202121011011 its reverse (11011012120201), we get a palindrome (21213133131212).

The spelling of 10202121011011 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, eleven thousand, eleven".