401011011030021 has 32 divisors (see below), whose sum is σ = 622364399078400. Its totient is φ = 224923435887360.

The previous prime is 401011011030017. The next prime is 401011011030061. The reversal of 401011011030021 is 120030110110104.

It is not a de Polignac number, because 401011011030021 - 2² = 401011011030017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401011011030061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244750260 + ... + 246383261.

It is an arithmetic number, because the mean of its divisors is an integer number (19448887471200).

Almost surely, 2^{401011011030021} is an apocalyptic number.

It is an amenable number.

401011011030021 is a deficient number, since it is larger than the sum of its proper divisors (221353388048379).

401011011030021 is a wasteful number, since it uses less digits than its factorization.

401011011030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491134249.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 401011011030021 its reverse (120030110110104), we get a palindrome (521041121140125).

The spelling of 401011011030021 in words is "four hundred one trillion, eleven billion, eleven million, thirty thousand, twenty-one".