2101221020019 has 96 divisors (see below), whose sum is σ = 3421659709440. Its totient is φ = 1132193462400.

The previous prime is 2101221020009. The next prime is 2101221020033. The reversal of 2101221020019 is 9100201221012.

It is not a de Polignac number, because 2101221020019 - 2⁸ = 2101221019763 is a prime.

It is a super-2 number, since 2×2101221020019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2101221019977 and 2101221020004.

It is not an unprimeable number, because it can be changed into a prime (2101221020009) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40482654 + ... + 40534524.

It is an arithmetic number, because the mean of its divisors is an integer number (35642288640).

Almost surely, 2^{2101221020019} is an apocalyptic number.

2101221020019 is a deficient number, since it is larger than the sum of its proper divisors (1320438689421).

2101221020019 is a wasteful number, since it uses less digits than its factorization.

2101221020019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52033 (or 51980 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 2101221020019 in words is "two trillion, one hundred one billion, two hundred twenty-one million, twenty thousand, nineteen".