1021002911961 has 8 divisors (see below), whose sum is σ = 1364836799040. Its totient is φ = 678918816432.

The previous prime is 1021002911953. The next prime is 1021002911963. The reversal of 1021002911961 is 1691192001201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021002911961 - 2³ = 1021002911953 is a prime.

It is a super-3 number, since 3×1021002911961³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021002911963) 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, 437446525 + ... + 437448858.

It is an arithmetic number, because the mean of its divisors is an integer number (170604599880).

Almost surely, 2^{1021002911961} is an apocalyptic number.

It is an amenable number.

1021002911961 is a deficient number, since it is larger than the sum of its proper divisors (343833887079).

1021002911961 is an equidigital number, since it uses as much as digits as its factorization.

1021002911961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874895775.

The product of its (nonzero) digits is 1944, while the sum is 33.

The spelling of 1021002911961 in words is "one trillion, twenty-one billion, two million, nine hundred eleven thousand, nine hundred sixty-one".