1020121202195 has 16 divisors (see below), whose sum is σ = 1242886718208. Its totient is φ = 803612003040.

The previous prime is 1020121202117. The next prime is 1020121202207. The reversal of 1020121202195 is 5912021210201.

It is not a de Polignac number, because 1020121202195 - 2¹⁰ = 1020121201171 is a prime.

It is a super-3 number, since 3×1020121202195³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311540 + ... + 1461950.

It is an arithmetic number, because the mean of its divisors is an integer number (77680419888).

Almost surely, 2^{1020121202195} is an apocalyptic number.

1020121202195 is a deficient number, since it is larger than the sum of its proper divisors (222765516013).

1020121202195 is a wasteful number, since it uses less digits than its factorization.

1020121202195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153130.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 1020121202195 its reverse (5912021210201), we get a palindrome (6932142412396).

The spelling of 1020121202195 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred ninety-five".