10021211020121 has 16 divisors (see below), whose sum is σ = 11519733283968. Its totient is φ = 8539448976000.

The previous prime is 10021211020091. The next prime is 10021211020133. The reversal of 10021211020121 is 12102011212001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021211020121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10021211020096 and 10021211020105.

It is not an unprimeable number, because it can be changed into a prime (10021211028121) 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, 2757221 + ... + 5257821.

It is an arithmetic number, because the mean of its divisors is an integer number (719983330248).

Almost surely, 2^{10021211020121} is an apocalyptic number.

It is an amenable number.

10021211020121 is a deficient number, since it is larger than the sum of its proper divisors (1498522263847).

10021211020121 is a wasteful number, since it uses less digits than its factorization.

10021211020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503952.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10021211020121 its reverse (12102011212001), we get a palindrome (22123222232122).

The spelling of 10021211020121 in words is "ten trillion, twenty-one billion, two hundred eleven million, twenty thousand, one hundred twenty-one".