420002100290121 has 16 divisors (see below), whose sum is σ = 560421646190400. Its totient is φ = 279792037797120.

The previous prime is 420002100290093. The next prime is 420002100290167. The reversal of 420002100290121 is 121092001200024.

It is not a de Polignac number, because 420002100290121 - 2⁶ = 420002100290057 is a prime.

It is a super-2 number, since 2×420002100290121² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420002100290091 and 420002100290100.

It is not an unprimeable number, because it can be changed into a prime (420002100290621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20219205 + ... + 35338653.

It is an arithmetic number, because the mean of its divisors is an integer number (35026352886900).

Almost surely, 2^{420002100290121} is an apocalyptic number.

It is an amenable number.

420002100290121 is a deficient number, since it is larger than the sum of its proper divisors (140419545900279).

420002100290121 is a wasteful number, since it uses less digits than its factorization.

420002100290121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15126376.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 420002100290121 its reverse (121092001200024), we get a palindrome (541094101490145).

The spelling of 420002100290121 in words is "four hundred twenty trillion, two billion, one hundred million, two hundred ninety thousand, one hundred twenty-one".