140221051201009 has 9 divisors (see below), whose sum is σ = 143724989732961. Its totient is φ = 136800551902080.

The previous prime is 140221051200961. The next prime is 140221051201043. The reversal of 140221051201009 is 900102150122041.

The square root of 140221051201009 is 11841497.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 809379119025 + 139411672081984 = 899655^2 + 11807272^2 .

It is not a de Polignac number, because 140221051201009 - 2²¹ = 140221049103857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140221051241009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 485356969 + ... + 485645785.

Almost surely, 2^{140221051201009} is an apocalyptic number.

140221051201009 is the 11841497-th square number.

140221051201009 is the 5920749-th centered octagonal number.

It is an amenable number.

140221051201009 is a deficient number, since it is larger than the sum of its proper divisors (3503938531952).

140221051201009 is an frugal number, since it uses more digits than its factorization.

140221051201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577716 (or 288858 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 140221051201009 in words is "one hundred forty trillion, two hundred twenty-one billion, fifty-one million, two hundred one thousand, nine".