1021172650026 has 16 divisors (see below), whose sum is σ = 2042363553984. Its totient is φ = 340387841024.

The previous prime is 1021172649983. The next prime is 1021172650027. The reversal of 1021172650026 is 6200562711201.

It is a super-2 number, since 2×1021172650026² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021172650027) 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, 29866 + ... + 1429418.

It is an arithmetic number, because the mean of its divisors is an integer number (127647722124).

Almost surely, 2^{1021172650026} is an apocalyptic number.

1021172650026 is an abundant number, since it is smaller than the sum of its proper divisors (1021190903958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021172650026 is a wasteful number, since it uses less digits than its factorization.

1021172650026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521165.

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 1021172650026 in words is "one trillion, twenty-one billion, one hundred seventy-two million, six hundred fifty thousand, twenty-six".