21153011112410 has 32 divisors (see below), whose sum is σ = 39399721779600. Its totient is φ = 8167083402240.

The previous prime is 21153011112379. The next prime is 21153011112427. The reversal of 21153011112410 is 1421111035112.

It can be written as a sum of positive squares in 8 ways, for example, as 2860769687161 + 18292241425249 = 1691381^2 + 4276943^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9507311 + ... + 11519330.

Almost surely, 2^{21153011112410} is an apocalyptic number.

21153011112410 is a deficient number, since it is larger than the sum of its proper divisors (18246710667190).

21153011112410 is a wasteful number, since it uses less digits than its factorization.

21153011112410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21030146.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 21153011112410 its reverse (1421111035112), we get a palindrome (22574122147522).

The spelling of 21153011112410 in words is "twenty-one trillion, one hundred fifty-three billion, eleven million, one hundred twelve thousand, four hundred ten".