20103021210121 has 8 divisors (see below), whose sum is σ = 20245933004000. Its totient is φ = 19960348201632.

The previous prime is 20103021210067. The next prime is 20103021210161. The reversal of 20103021210121 is 12101212030102.

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 20103021210121 - 2³⁵ = 20068661471753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20103021210095 and 20103021210104.

It is not an unprimeable number, because it can be changed into a prime (20103021210161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59527371 + ... + 59864128.

It is an arithmetic number, because the mean of its divisors is an integer number (2530741625500).

Almost surely, 2^{20103021210121} is an apocalyptic number.

It is an amenable number.

20103021210121 is a deficient number, since it is larger than the sum of its proper divisors (142911793879).

20103021210121 is a wasteful number, since it uses less digits than its factorization.

20103021210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119392695.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20103021210121 its reverse (12101212030102), we get a palindrome (32204233240223).

The spelling of 20103021210121 in words is "twenty trillion, one hundred three billion, twenty-one million, two hundred ten thousand, one hundred twenty-one".