421052121052 has 24 divisors (see below), whose sum is σ = 757055139120. Its totient is φ = 204824225280.

The previous prime is 421052121037. The next prime is 421052121121. The reversal of 421052121052 is 250121250124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9173599 + ... + 9219382.

It is an arithmetic number, because the mean of its divisors is an integer number (31543964130).

Almost surely, 2^421052121052 is an apocalyptic number.

It is an amenable number.

421052121052 is a deficient number, since it is larger than the sum of its proper divisors (336003018068).

421052121052 is a wasteful number, since it uses less digits than its factorization.

421052121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18393141 (or 18393139 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 421052121052 its reverse (250121250124), we get a palindrome (671173371176).

The spelling of 421052121052 in words is "four hundred twenty-one billion, fifty-two million, one hundred twenty-one thousand, fifty-two".