2021012212019 has 8 divisors (see below), whose sum is σ = 2036034490512. Its totient is φ = 2006041292640.

The previous prime is 2021012212007. The next prime is 2021012212031. The reversal of 2021012212019 is 9102122101202.

It is an interprime number because it is at equal distance from previous prime (2021012212007) and next prime (2021012212031).

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 2021012212019 - 2¹² = 2021012207923 is a prime.

It is a super-2 number, since 2×2021012212019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021012211985 and 2021012212003.

It is not an unprimeable number, because it can be changed into a prime (2021012212039) 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, 12760784 + ... + 12918189.

It is an arithmetic number, because the mean of its divisors is an integer number (254504311314).

Almost surely, 2^{2021012212019} is an apocalyptic number.

2021012212019 is a deficient number, since it is larger than the sum of its proper divisors (15022278493).

2021012212019 is a wasteful number, since it uses less digits than its factorization.

2021012212019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25679557.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 2021012212019 in words is "two trillion, twenty-one billion, twelve million, two hundred twelve thousand, nineteen".