10020121202154 has 32 divisors (see below), whose sum is σ = 23125494712320. Its totient is φ = 2835096705072.

The previous prime is 10020121202153. The next prime is 10020121202237. The reversal of 10020121202154 is 45120212102001.

It is a super-2 number, since 2×10020121202154² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 10020121202154.

It is not an unprimeable number, because it can be changed into a prime (10020121202153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158123414 + ... + 1158132065.

It is an arithmetic number, because the mean of its divisors is an integer number (722671709760).

Almost surely, 2^{10020121202154} is an apocalyptic number.

10020121202154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

10020121202154 is an abundant number, since it is smaller than the sum of its proper divisors (13105373510166).

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

10020121202154 is a wasteful number, since it uses less digits than its factorization.

10020121202154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316255594.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 10020121202154 its reverse (45120212102001), we get a palindrome (55140333304155).

The spelling of 10020121202154 in words is "ten trillion, twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred fifty-four".