2021030121 has 16 divisors (see below), whose sum is σ = 2962833408. Its totient is φ = 1215219600.

The previous prime is 2021030113. The next prime is 2021030129. The reversal of 2021030121 is 1210301202.

It is an interprime number because it is at equal distance from previous prime (2021030113) and next prime (2021030129).

It is not a de Polignac number, because 2021030121 - 2³ = 2021030113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021030097 and 2021030106.

It is not an unprimeable number, because it can be changed into a prime (2021030129) 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, 236925 + ... + 245306.

It is an arithmetic number, because the mean of its divisors is an integer number (185177088).

Almost surely, 2^2021030121 is an apocalyptic number.

It is an amenable number.

2021030121 is a deficient number, since it is larger than the sum of its proper divisors (941803287).

2021030121 is a wasteful number, since it uses less digits than its factorization.

2021030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482372.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2021030121 is about 44955.8685935440. The cubic root of 2021030121 is about 1264.3217100343.

Adding to 2021030121 its reverse (1210301202), we get a palindrome (3231331323).

The spelling of 2021030121 in words is "two billion, twenty-one million, thirty thousand, one hundred twenty-one".